398128040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{191}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 952750080

約数和(自身を除く): 554622040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 191, 205, 248, 310, 328, 382, 410, 620, 764, 820, 955, 1240, 1271, 1528, 1640, 1681, 1910, 2542, 3362, 3820, 5084, 5921, 6355, 6724, 7640, 7831, 8405, 10168, 11842, 12710, 13448, 15662, 16810, 23684, 25420, 29605, 31324, 33620, 39155, 47368, 50840, 52111, 59210, 62648, 67240, 78310, 104222, 118420, 156620, 208444, 236840, 242761, 260555, 313240, 321071, 416888, 485522, 521110, 642142, 971044, 1042220, 1213805, 1284284, 1605355, 1942088, 2084440, 2427610, 2568568, 3210710, 4855220, 6421420, 9710440, 9953201, 12842840, 19906402, 39812804, 49766005, 79625608, 99532010, 199064020, 398128040]

約数ペア:

[(1, 398128040), (2, 199064020), (4, 99532010), (5, 79625608), (8, 49766005), (10, 39812804), (20, 19906402), (31, 12842840), (40, 9953201), (41, 9710440), (62, 6421420), (82, 4855220), (124, 3210710), (155, 2568568), (164, 2427610), (191, 2084440), (205, 1942088), (248, 1605355), (310, 1284284), (328, 1213805), (382, 1042220), (410, 971044), (620, 642142), (764, 521110), (820, 485522), (955, 416888), (1240, 321071), (1271, 313240), (1528, 260555), (1640, 242761), (1681, 236840), (1910, 208444), (2542, 156620), (3362, 118420), (3820, 104222), (5084, 78310), (5921, 67240), (6355, 62648), (6724, 59210), (7640, 52111), (7831, 50840), (8405, 47368), (10168, 39155), (11842, 33620), (12710, 31324), (13448, 29605), (15662, 25420), (16810, 23684)]