257093540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 643507200

約数和(自身を除く): 386413660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 31, 44, 46, 55, 62, 92, 110, 115, 121, 124, 149, 155, 220, 230, 242, 253, 298, 310, 341, 460, 484, 506, 596, 605, 620, 682, 713, 745, 1012, 1210, 1265, 1364, 1426, 1490, 1639, 1705, 2420, 2530, 2783, 2852, 2980, 3278, 3410, 3427, 3565, 3751, 4619, 5060, 5566, 6556, 6820, 6854, 7130, 7502, 7843, 8195, 9238, 11132, 13708, 13915, 14260, 15004, 15686, 16390, 17135, 18029, 18476, 18755, 23095, 27830, 31372, 32780, 34270, 36058, 37510, 37697, 39215, 46190, 50809, 55660, 68540, 72116, 75020, 75394, 78430, 86273, 90145, 92380, 101618, 106237, 150788, 156860, 172546, 180290, 188485, 203236, 212474, 254045, 345092, 360580, 376970, 414667, 424948, 431365, 508090, 531185, 558899, 753940, 829334, 862730, 1016180, 1062370, 1117798, 1168607, 1658668, 1725460, 2073335, 2124740, 2235596, 2337214, 2794495, 4146670, 4674428, 5588990, 5843035, 8293340, 11177980, 11686070, 12854677, 23372140, 25709354, 51418708, 64273385, 128546770, 257093540]

約数ペア:

[(1, 257093540), (2, 128546770), (4, 64273385), (5, 51418708), (10, 25709354), (11, 23372140), (20, 12854677), (22, 11686070), (23, 11177980), (31, 8293340), (44, 5843035), (46, 5588990), (55, 4674428), (62, 4146670), (92, 2794495), (110, 2337214), (115, 2235596), (121, 2124740), (124, 2073335), (149, 1725460), (155, 1658668), (220, 1168607), (230, 1117798), (242, 1062370), (253, 1016180), (298, 862730), (310, 829334), (341, 753940), (460, 558899), (484, 531185), (506, 508090), (596, 431365), (605, 424948), (620, 414667), (682, 376970), (713, 360580), (745, 345092), (1012, 254045), (1210, 212474), (1265, 203236), (1364, 188485), (1426, 180290), (1490, 172546), (1639, 156860), (1705, 150788), (2420, 106237), (2530, 101618), (2783, 92380), (2852, 90145), (2980, 86273), (3278, 78430), (3410, 75394), (3427, 75020), (3565, 72116), (3751, 68540), (4619, 55660), (5060, 50809), (5566, 46190), (6556, 39215), (6820, 37697), (6854, 37510), (7130, 36058), (7502, 34270), (7843, 32780), (8195, 31372), (9238, 27830), (11132, 23095), (13708, 18755), (13915, 18476), (14260, 18029), (15004, 17135), (15686, 16390)]