87871980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:464

約数の個数: 192

約数和(自身を含む): 308109312

約数和(自身を除く): 220237332

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 31, 34, 35, 42, 51, 60, 62, 68, 70, 84, 85, 93, 102, 105, 119, 124, 140, 155, 170, 186, 204, 210, 217, 238, 255, 310, 340, 357, 372, 397, 420, 434, 465, 476, 510, 527, 595, 620, 651, 714, 794, 868, 930, 1020, 1054, 1085, 1190, 1191, 1302, 1428, 1581, 1588, 1785, 1860, 1985, 2108, 2170, 2380, 2382, 2604, 2635, 2779, 3162, 3255, 3570, 3689, 3970, 4340, 4764, 5270, 5558, 5955, 6324, 6510, 6749, 7140, 7378, 7905, 7940, 8337, 10540, 11067, 11116, 11910, 12307, 13020, 13498, 13895, 14756, 15810, 16674, 18445, 20247, 22134, 23820, 24614, 26996, 27790, 31620, 33348, 33745, 36890, 36921, 40494, 41685, 44268, 47243, 49228, 55335, 55580, 61535, 67490, 73780, 73842, 80988, 83370, 86149, 94486, 101235, 110670, 123070, 134980, 141729, 147684, 166740, 172298, 184605, 188972, 202470, 209219, 221340, 236215, 246140, 258447, 283458, 344596, 369210, 404940, 418438, 430745, 472430, 516894, 566916, 627657, 708645, 738420, 836876, 861490, 944860, 1033788, 1046095, 1255314, 1292235, 1417290, 1464533, 1722980, 2092190, 2510628, 2584470, 2834580, 2929066, 3138285, 4184380, 4393599, 5168940, 5858132, 6276570, 7322665, 8787198, 12553140, 14645330, 17574396, 21967995, 29290660, 43935990, 87871980]

約数ペア:

[(1, 87871980), (2, 43935990), (3, 29290660), (4, 21967995), (5, 17574396), (6, 14645330), (7, 12553140), (10, 8787198), (12, 7322665), (14, 6276570), (15, 5858132), (17, 5168940), (20, 4393599), (21, 4184380), (28, 3138285), (30, 2929066), (31, 2834580), (34, 2584470), (35, 2510628), (42, 2092190), (51, 1722980), (60, 1464533), (62, 1417290), (68, 1292235), (70, 1255314), (84, 1046095), (85, 1033788), (93, 944860), (102, 861490), (105, 836876), (119, 738420), (124, 708645), (140, 627657), (155, 566916), (170, 516894), (186, 472430), (204, 430745), (210, 418438), (217, 404940), (238, 369210), (255, 344596), (310, 283458), (340, 258447), (357, 246140), (372, 236215), (397, 221340), (420, 209219), (434, 202470), (465, 188972), (476, 184605), (510, 172298), (527, 166740), (595, 147684), (620, 141729), (651, 134980), (714, 123070), (794, 110670), (868, 101235), (930, 94486), (1020, 86149), (1054, 83370), (1085, 80988), (1190, 73842), (1191, 73780), (1302, 67490), (1428, 61535), (1581, 55580), (1588, 55335), (1785, 49228), (1860, 47243), (1985, 44268), (2108, 41685), (2170, 40494), (2380, 36921), (2382, 36890), (2604, 33745), (2635, 33348), (2779, 31620), (3162, 27790), (3255, 26996), (3570, 24614), (3689, 23820), (3970, 22134), (4340, 20247), (4764, 18445), (5270, 16674), (5558, 15810), (5955, 14756), (6324, 13895), (6510, 13498), (6749, 13020), (7140, 12307), (7378, 11910), (7905, 11116), (7940, 11067), (8337, 10540)]