639627960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{1237}}^1$

素因数の和:1421

約数の個数: 128

約数和(自身を含む): 1996646400

約数和(自身を除く): 1357018440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 139, 155, 186, 248, 278, 310, 372, 417, 465, 556, 620, 695, 744, 834, 930, 1112, 1237, 1240, 1390, 1668, 1860, 2085, 2474, 2780, 3336, 3711, 3720, 4170, 4309, 4948, 5560, 6185, 7422, 8340, 8618, 9896, 12370, 12927, 14844, 16680, 17236, 18555, 21545, 24740, 25854, 29688, 34472, 37110, 38347, 43090, 49480, 51708, 64635, 74220, 76694, 86180, 103416, 115041, 129270, 148440, 153388, 171943, 172360, 191735, 230082, 258540, 306776, 343886, 383470, 460164, 515829, 517080, 575205, 687772, 766940, 859715, 920328, 1031658, 1150410, 1375544, 1533880, 1719430, 2063316, 2300820, 2579145, 3438860, 4126632, 4601640, 5158290, 5330233, 6877720, 10316580, 10660466, 15990699, 20633160, 21320932, 26651165, 31981398, 42641864, 53302330, 63962796, 79953495, 106604660, 127925592, 159906990, 213209320, 319813980, 639627960]

約数ペア:

[(1, 639627960), (2, 319813980), (3, 213209320), (4, 159906990), (5, 127925592), (6, 106604660), (8, 79953495), (10, 63962796), (12, 53302330), (15, 42641864), (20, 31981398), (24, 26651165), (30, 21320932), (31, 20633160), (40, 15990699), (60, 10660466), (62, 10316580), (93, 6877720), (120, 5330233), (124, 5158290), (139, 4601640), (155, 4126632), (186, 3438860), (248, 2579145), (278, 2300820), (310, 2063316), (372, 1719430), (417, 1533880), (465, 1375544), (556, 1150410), (620, 1031658), (695, 920328), (744, 859715), (834, 766940), (930, 687772), (1112, 575205), (1237, 517080), (1240, 515829), (1390, 460164), (1668, 383470), (1860, 343886), (2085, 306776), (2474, 258540), (2780, 230082), (3336, 191735), (3711, 172360), (3720, 171943), (4170, 153388), (4309, 148440), (4948, 129270), (5560, 115041), (6185, 103416), (7422, 86180), (8340, 76694), (8618, 74220), (9896, 64635), (12370, 51708), (12927, 49480), (14844, 43090), (16680, 38347), (17236, 37110), (18555, 34472), (21545, 29688), (24740, 25854)]