248589640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{461}}^1$

素因数の和:563

約数の個数: 128

約数和(自身を含む): 649645920

約数和(自身を除く): 401056280

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 61, 65, 68, 85, 104, 122, 130, 136, 170, 221, 244, 260, 305, 340, 442, 461, 488, 520, 610, 680, 793, 884, 922, 1037, 1105, 1220, 1586, 1768, 1844, 2074, 2210, 2305, 2440, 3172, 3688, 3965, 4148, 4420, 4610, 5185, 5993, 6344, 7837, 7930, 8296, 8840, 9220, 10370, 11986, 13481, 15674, 15860, 18440, 20740, 23972, 26962, 28121, 29965, 31348, 31720, 39185, 41480, 47944, 53924, 56242, 59930, 62696, 67405, 78370, 101881, 107848, 112484, 119860, 134810, 140605, 156740, 203762, 224968, 239720, 269620, 281210, 313480, 365573, 407524, 478057, 509405, 539240, 562420, 731146, 815048, 956114, 1018810, 1124840, 1462292, 1827865, 1912228, 2037620, 2390285, 2924584, 3655730, 3824456, 4075240, 4780570, 6214741, 7311460, 9561140, 12429482, 14622920, 19122280, 24858964, 31073705, 49717928, 62147410, 124294820, 248589640]

約数ペア:

[(1, 248589640), (2, 124294820), (4, 62147410), (5, 49717928), (8, 31073705), (10, 24858964), (13, 19122280), (17, 14622920), (20, 12429482), (26, 9561140), (34, 7311460), (40, 6214741), (52, 4780570), (61, 4075240), (65, 3824456), (68, 3655730), (85, 2924584), (104, 2390285), (122, 2037620), (130, 1912228), (136, 1827865), (170, 1462292), (221, 1124840), (244, 1018810), (260, 956114), (305, 815048), (340, 731146), (442, 562420), (461, 539240), (488, 509405), (520, 478057), (610, 407524), (680, 365573), (793, 313480), (884, 281210), (922, 269620), (1037, 239720), (1105, 224968), (1220, 203762), (1586, 156740), (1768, 140605), (1844, 134810), (2074, 119860), (2210, 112484), (2305, 107848), (2440, 101881), (3172, 78370), (3688, 67405), (3965, 62696), (4148, 59930), (4420, 56242), (4610, 53924), (5185, 47944), (5993, 41480), (6344, 39185), (7837, 31720), (7930, 31348), (8296, 29965), (8840, 28121), (9220, 26962), (10370, 23972), (11986, 20740), (13481, 18440), (15674, 15860)]