251841520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:303

約数の個数: 160

約数和(自身を含む): 702812160

約数和(自身を除く): 450970640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 89, 112, 124, 140, 155, 163, 178, 217, 248, 280, 310, 326, 356, 434, 445, 496, 560, 620, 623, 652, 712, 815, 868, 890, 1085, 1141, 1240, 1246, 1304, 1424, 1630, 1736, 1780, 2170, 2282, 2480, 2492, 2608, 2759, 3115, 3260, 3472, 3560, 4340, 4564, 4984, 5053, 5518, 5705, 6230, 6520, 7120, 8680, 9128, 9968, 10106, 11036, 11410, 12460, 13040, 13795, 14507, 17360, 18256, 19313, 20212, 22072, 22820, 24920, 25265, 27590, 29014, 35371, 38626, 40424, 44144, 45640, 49840, 50530, 55180, 58028, 70742, 72535, 77252, 80848, 91280, 96565, 101060, 101549, 110360, 116056, 141484, 145070, 154504, 176855, 193130, 202120, 203098, 220720, 232112, 282968, 290140, 309008, 353710, 386260, 404240, 406196, 449717, 507745, 565936, 580280, 707420, 772520, 812392, 899434, 1015490, 1160560, 1414840, 1545040, 1624784, 1798868, 2030980, 2248585, 2829680, 3148019, 3597736, 4061960, 4497170, 6296038, 7195472, 8123920, 8994340, 12592076, 15740095, 17988680, 25184152, 31480190, 35977360, 50368304, 62960380, 125920760, 251841520]

約数ペア:

[(1, 251841520), (2, 125920760), (4, 62960380), (5, 50368304), (7, 35977360), (8, 31480190), (10, 25184152), (14, 17988680), (16, 15740095), (20, 12592076), (28, 8994340), (31, 8123920), (35, 7195472), (40, 6296038), (56, 4497170), (62, 4061960), (70, 3597736), (80, 3148019), (89, 2829680), (112, 2248585), (124, 2030980), (140, 1798868), (155, 1624784), (163, 1545040), (178, 1414840), (217, 1160560), (248, 1015490), (280, 899434), (310, 812392), (326, 772520), (356, 707420), (434, 580280), (445, 565936), (496, 507745), (560, 449717), (620, 406196), (623, 404240), (652, 386260), (712, 353710), (815, 309008), (868, 290140), (890, 282968), (1085, 232112), (1141, 220720), (1240, 203098), (1246, 202120), (1304, 193130), (1424, 176855), (1630, 154504), (1736, 145070), (1780, 141484), (2170, 116056), (2282, 110360), (2480, 101549), (2492, 101060), (2608, 96565), (2759, 91280), (3115, 80848), (3260, 77252), (3472, 72535), (3560, 70742), (4340, 58028), (4564, 55180), (4984, 50530), (5053, 49840), (5518, 45640), (5705, 44144), (6230, 40424), (6520, 38626), (7120, 35371), (8680, 29014), (9128, 27590), (9968, 25265), (10106, 24920), (11036, 22820), (11410, 22072), (12460, 20212), (13040, 19313), (13795, 18256), (14507, 17360)]