81397120

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{18169}}^1$

素因数の和:18195

約数の個数: 64

約数和(自身を含む): 222400800

約数和(自身を除く): 141003680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 18169, 36338, 72676, 90845, 127183, 145352, 181690, 254366, 290704, 363380, 508732, 581408, 635915, 726760, 1017464, 1162816, 1271830, 1453520, 2034928, 2325632, 2543660, 2907040, 4069856, 5087320, 5814080, 8139712, 10174640, 11628160, 16279424, 20349280, 40698560, 81397120]

約数ペア:

[(1, 81397120), (2, 40698560), (4, 20349280), (5, 16279424), (7, 11628160), (8, 10174640), (10, 8139712), (14, 5814080), (16, 5087320), (20, 4069856), (28, 2907040), (32, 2543660), (35, 2325632), (40, 2034928), (56, 1453520), (64, 1271830), (70, 1162816), (80, 1017464), (112, 726760), (128, 635915), (140, 581408), (160, 508732), (224, 363380), (280, 290704), (320, 254366), (448, 181690), (560, 145352), (640, 127183), (896, 90845), (1120, 72676), (2240, 36338), (4480, 18169)]