28732720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1$

素因数の和:638

約数の個数: 80

約数和(自身を含む): 72772128

約数和(自身を除く): 44039408

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 37, 40, 68, 74, 80, 85, 136, 148, 170, 185, 272, 296, 340, 370, 571, 592, 629, 680, 740, 1142, 1258, 1360, 1480, 2284, 2516, 2855, 2960, 3145, 4568, 5032, 5710, 6290, 9136, 9707, 10064, 11420, 12580, 19414, 21127, 22840, 25160, 38828, 42254, 45680, 48535, 50320, 77656, 84508, 97070, 105635, 155312, 169016, 194140, 211270, 338032, 359159, 388280, 422540, 718318, 776560, 845080, 1436636, 1690160, 1795795, 2873272, 3591590, 5746544, 7183180, 14366360, 28732720]

約数ペア:

[(1, 28732720), (2, 14366360), (4, 7183180), (5, 5746544), (8, 3591590), (10, 2873272), (16, 1795795), (17, 1690160), (20, 1436636), (34, 845080), (37, 776560), (40, 718318), (68, 422540), (74, 388280), (80, 359159), (85, 338032), (136, 211270), (148, 194140), (170, 169016), (185, 155312), (272, 105635), (296, 97070), (340, 84508), (370, 77656), (571, 50320), (592, 48535), (629, 45680), (680, 42254), (740, 38828), (1142, 25160), (1258, 22840), (1360, 21127), (1480, 19414), (2284, 12580), (2516, 11420), (2855, 10064), (2960, 9707), (3145, 9136), (4568, 6290), (5032, 5710)]