678487940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:489

約数の個数: 96

約数和(自身を含む): 1571724000

約数和(自身を除く): 893236060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 109, 130, 178, 218, 260, 269, 356, 436, 445, 538, 545, 890, 1076, 1090, 1157, 1345, 1417, 1780, 2180, 2314, 2690, 2834, 3497, 4628, 5380, 5668, 5785, 6994, 7085, 9701, 11570, 13988, 14170, 17485, 19402, 23140, 23941, 28340, 29321, 34970, 38804, 47882, 48505, 58642, 69940, 95764, 97010, 117284, 119705, 126113, 146605, 194020, 239410, 252226, 293210, 311233, 381173, 478820, 504452, 586420, 622466, 630565, 762346, 1244932, 1261130, 1524692, 1556165, 1905865, 2522260, 2609569, 3112330, 3811730, 5219138, 6224660, 7623460, 10438276, 13047845, 26095690, 33924397, 52191380, 67848794, 135697588, 169621985, 339243970, 678487940]

約数ペア:

[(1, 678487940), (2, 339243970), (4, 169621985), (5, 135697588), (10, 67848794), (13, 52191380), (20, 33924397), (26, 26095690), (52, 13047845), (65, 10438276), (89, 7623460), (109, 6224660), (130, 5219138), (178, 3811730), (218, 3112330), (260, 2609569), (269, 2522260), (356, 1905865), (436, 1556165), (445, 1524692), (538, 1261130), (545, 1244932), (890, 762346), (1076, 630565), (1090, 622466), (1157, 586420), (1345, 504452), (1417, 478820), (1780, 381173), (2180, 311233), (2314, 293210), (2690, 252226), (2834, 239410), (3497, 194020), (4628, 146605), (5380, 126113), (5668, 119705), (5785, 117284), (6994, 97010), (7085, 95764), (9701, 69940), (11570, 58642), (13988, 48505), (14170, 47882), (17485, 38804), (19402, 34970), (23140, 29321), (23941, 28340)]