31461520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 77137920

約数和(自身を除く): 45676400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 71, 80, 116, 142, 145, 191, 232, 284, 290, 355, 382, 464, 568, 580, 710, 764, 955, 1136, 1160, 1420, 1528, 1910, 2059, 2320, 2840, 3056, 3820, 4118, 5539, 5680, 7640, 8236, 10295, 11078, 13561, 15280, 16472, 20590, 22156, 27122, 27695, 32944, 41180, 44312, 54244, 55390, 67805, 82360, 88624, 108488, 110780, 135610, 164720, 216976, 221560, 271220, 393269, 443120, 542440, 786538, 1084880, 1573076, 1966345, 3146152, 3932690, 6292304, 7865380, 15730760, 31461520]

約数ペア:

[(1, 31461520), (2, 15730760), (4, 7865380), (5, 6292304), (8, 3932690), (10, 3146152), (16, 1966345), (20, 1573076), (29, 1084880), (40, 786538), (58, 542440), (71, 443120), (80, 393269), (116, 271220), (142, 221560), (145, 216976), (191, 164720), (232, 135610), (284, 110780), (290, 108488), (355, 88624), (382, 82360), (464, 67805), (568, 55390), (580, 54244), (710, 44312), (764, 41180), (955, 32944), (1136, 27695), (1160, 27122), (1420, 22156), (1528, 20590), (1910, 16472), (2059, 15280), (2320, 13561), (2840, 11078), (3056, 10295), (3820, 8236), (4118, 7640), (5539, 5680)]