81553860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19699}}^1$

素因数の和:19737

約数の個数: 72

約数和(自身を含む): 258148800

約数和(自身を除く): 176594940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 19699, 39398, 59097, 78796, 98495, 118194, 177291, 196990, 236388, 295485, 354582, 393980, 453077, 590970, 709164, 886455, 906154, 1181940, 1359231, 1772910, 1812308, 2265385, 2718462, 3545820, 4077693, 4530770, 5436924, 6796155, 8155386, 9061540, 13592310, 16310772, 20388465, 27184620, 40776930, 81553860]

約数ペア:

[(1, 81553860), (2, 40776930), (3, 27184620), (4, 20388465), (5, 16310772), (6, 13592310), (9, 9061540), (10, 8155386), (12, 6796155), (15, 5436924), (18, 4530770), (20, 4077693), (23, 3545820), (30, 2718462), (36, 2265385), (45, 1812308), (46, 1772910), (60, 1359231), (69, 1181940), (90, 906154), (92, 886455), (115, 709164), (138, 590970), (180, 453077), (207, 393980), (230, 354582), (276, 295485), (345, 236388), (414, 196990), (460, 177291), (690, 118194), (828, 98495), (1035, 78796), (1380, 59097), (2070, 39398), (4140, 19699)]