81231780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1$

素因数の和:434

約数の個数: 192

約数和(自身を含む): 284884992

約数和(自身を除く): 203653212

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, 367, 372, 420, 434, 465, 476, 510, 527, 595, 620, 651, 714, 734, 868, 930, 1020, 1054, 1085, 1101, 1190, 1302, 1428, 1468, 1581, 1785, 1835, 1860, 2108, 2170, 2202, 2380, 2569, 2604, 2635, 3162, 3255, 3570, 3670, 3689, 4340, 4404, 5138, 5270, 5505, 6239, 6324, 6510, 7140, 7340, 7378, 7707, 7905, 10276, 10540, 11010, 11067, 11377, 12478, 12845, 13020, 14756, 15414, 15810, 18445, 18717, 22020, 22134, 22754, 24956, 25690, 30828, 31195, 31620, 34131, 36890, 37434, 38535, 43673, 44268, 45508, 51380, 55335, 56885, 62390, 68262, 73780, 74868, 77070, 79639, 87346, 93585, 110670, 113770, 124780, 131019, 136524, 154140, 159278, 170655, 174692, 187170, 193409, 218365, 221340, 227540, 238917, 262038, 318556, 341310, 374340, 386818, 398195, 436730, 477834, 524076, 580227, 655095, 682620, 773636, 796390, 873460, 955668, 967045, 1160454, 1194585, 1310190, 1353863, 1592780, 1934090, 2320908, 2389170, 2620380, 2707726, 2901135, 3868180, 4061589, 4778340, 5415452, 5802270, 6769315, 8123178, 11604540, 13538630, 16246356, 20307945, 27077260, 40615890, 81231780]

約数ペア:

[(1, 81231780), (2, 40615890), (3, 27077260), (4, 20307945), (5, 16246356), (6, 13538630), (7, 11604540), (10, 8123178), (12, 6769315), (14, 5802270), (15, 5415452), (17, 4778340), (20, 4061589), (21, 3868180), (28, 2901135), (30, 2707726), (31, 2620380), (34, 2389170), (35, 2320908), (42, 1934090), (51, 1592780), (60, 1353863), (62, 1310190), (68, 1194585), (70, 1160454), (84, 967045), (85, 955668), (93, 873460), (102, 796390), (105, 773636), (119, 682620), (124, 655095), (140, 580227), (155, 524076), (170, 477834), (186, 436730), (204, 398195), (210, 386818), (217, 374340), (238, 341310), (255, 318556), (310, 262038), (340, 238917), (357, 227540), (367, 221340), (372, 218365), (420, 193409), (434, 187170), (465, 174692), (476, 170655), (510, 159278), (527, 154140), (595, 136524), (620, 131019), (651, 124780), (714, 113770), (734, 110670), (868, 93585), (930, 87346), (1020, 79639), (1054, 77070), (1085, 74868), (1101, 73780), (1190, 68262), (1302, 62390), (1428, 56885), (1468, 55335), (1581, 51380), (1785, 45508), (1835, 44268), (1860, 43673), (2108, 38535), (2170, 37434), (2202, 36890), (2380, 34131), (2569, 31620), (2604, 31195), (2635, 30828), (3162, 25690), (3255, 24956), (3570, 22754), (3670, 22134), (3689, 22020), (4340, 18717), (4404, 18445), (5138, 15810), (5270, 15414), (5505, 14756), (6239, 13020), (6324, 12845), (6510, 12478), (7140, 11377), (7340, 11067), (7378, 11010), (7707, 10540), (7905, 10276)]