81565120

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2801}}^1$

素因数の和:2838

約数の個数: 112

約数和(自身を含む): 239133888

約数和(自身を除く): 157568768

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 728, 832, 910, 1040, 1120, 1456, 1820, 2080, 2240, 2801, 2912, 3640, 4160, 5602, 5824, 7280, 11204, 14005, 14560, 19607, 22408, 28010, 29120, 36413, 39214, 44816, 56020, 72826, 78428, 89632, 98035, 112040, 145652, 156856, 179264, 182065, 196070, 224080, 254891, 291304, 313712, 364130, 392140, 448160, 509782, 582608, 627424, 728260, 784280, 896320, 1019564, 1165216, 1254848, 1274455, 1456520, 1568560, 2039128, 2330432, 2548910, 2913040, 3137120, 4078256, 5097820, 5826080, 6274240, 8156512, 10195640, 11652160, 16313024, 20391280, 40782560, 81565120]

約数ペア:

[(1, 81565120), (2, 40782560), (4, 20391280), (5, 16313024), (7, 11652160), (8, 10195640), (10, 8156512), (13, 6274240), (14, 5826080), (16, 5097820), (20, 4078256), (26, 3137120), (28, 2913040), (32, 2548910), (35, 2330432), (40, 2039128), (52, 1568560), (56, 1456520), (64, 1274455), (65, 1254848), (70, 1165216), (80, 1019564), (91, 896320), (104, 784280), (112, 728260), (130, 627424), (140, 582608), (160, 509782), (182, 448160), (208, 392140), (224, 364130), (260, 313712), (280, 291304), (320, 254891), (364, 224080), (416, 196070), (448, 182065), (455, 179264), (520, 156856), (560, 145652), (728, 112040), (832, 98035), (910, 89632), (1040, 78428), (1120, 72826), (1456, 56020), (1820, 44816), (2080, 39214), (2240, 36413), (2801, 29120), (2912, 28010), (3640, 22408), (4160, 19607), (5602, 14560), (5824, 14005), (7280, 11204)]