8781990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 128

約数和(自身を含む): 26542080

約数和(自身を除く): 17760090

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 31, 35, 38, 42, 57, 62, 70, 71, 93, 95, 105, 114, 133, 142, 155, 186, 190, 210, 213, 217, 266, 285, 310, 355, 399, 426, 434, 465, 497, 570, 589, 651, 665, 710, 798, 930, 994, 1065, 1085, 1178, 1302, 1330, 1349, 1491, 1767, 1995, 2130, 2170, 2201, 2485, 2698, 2945, 2982, 3255, 3534, 3990, 4047, 4123, 4402, 4970, 5890, 6510, 6603, 6745, 7455, 8094, 8246, 8835, 9443, 11005, 12369, 13206, 13490, 14910, 15407, 17670, 18886, 20235, 20615, 22010, 24738, 28329, 30814, 33015, 40470, 41230, 41819, 46221, 47215, 56658, 61845, 66030, 77035, 83638, 92442, 94430, 123690, 125457, 141645, 154070, 209095, 231105, 250914, 283290, 292733, 418190, 462210, 585466, 627285, 878199, 1254570, 1463665, 1756398, 2927330, 4390995, 8781990]

約数ペア:

[(1, 8781990), (2, 4390995), (3, 2927330), (5, 1756398), (6, 1463665), (7, 1254570), (10, 878199), (14, 627285), (15, 585466), (19, 462210), (21, 418190), (30, 292733), (31, 283290), (35, 250914), (38, 231105), (42, 209095), (57, 154070), (62, 141645), (70, 125457), (71, 123690), (93, 94430), (95, 92442), (105, 83638), (114, 77035), (133, 66030), (142, 61845), (155, 56658), (186, 47215), (190, 46221), (210, 41819), (213, 41230), (217, 40470), (266, 33015), (285, 30814), (310, 28329), (355, 24738), (399, 22010), (426, 20615), (434, 20235), (465, 18886), (497, 17670), (570, 15407), (589, 14910), (651, 13490), (665, 13206), (710, 12369), (798, 11005), (930, 9443), (994, 8835), (1065, 8246), (1085, 8094), (1178, 7455), (1302, 6745), (1330, 6603), (1349, 6510), (1491, 5890), (1767, 4970), (1995, 4402), (2130, 4123), (2170, 4047), (2201, 3990), (2485, 3534), (2698, 3255), (2945, 2982)]