251216560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:579

約数の個数: 160

約数和(自身を含む): 714240000

約数和(自身を除く): 463023440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 31, 35, 40, 56, 58, 62, 70, 80, 112, 116, 124, 140, 145, 155, 203, 217, 232, 248, 280, 290, 310, 406, 434, 464, 496, 499, 560, 580, 620, 812, 868, 899, 998, 1015, 1085, 1160, 1240, 1624, 1736, 1798, 1996, 2030, 2170, 2320, 2480, 2495, 3248, 3472, 3493, 3596, 3992, 4060, 4340, 4495, 4990, 6293, 6986, 7192, 7984, 8120, 8680, 8990, 9980, 12586, 13972, 14384, 14471, 15469, 16240, 17360, 17465, 17980, 19960, 25172, 27944, 28942, 30938, 31465, 34930, 35960, 39920, 50344, 55888, 57884, 61876, 62930, 69860, 71920, 72355, 77345, 100688, 101297, 108283, 115768, 123752, 125860, 139720, 144710, 154690, 202594, 216566, 231536, 247504, 251720, 279440, 289420, 309380, 405188, 433132, 448601, 503440, 506485, 541415, 578840, 618760, 810376, 866264, 897202, 1012970, 1082830, 1157680, 1237520, 1620752, 1732528, 1794404, 2025940, 2165660, 2243005, 3140207, 3588808, 4051880, 4331320, 4486010, 6280414, 7177616, 8103760, 8662640, 8972020, 12560828, 15701035, 17944040, 25121656, 31402070, 35888080, 50243312, 62804140, 125608280, 251216560]

約数ペア:

[(1, 251216560), (2, 125608280), (4, 62804140), (5, 50243312), (7, 35888080), (8, 31402070), (10, 25121656), (14, 17944040), (16, 15701035), (20, 12560828), (28, 8972020), (29, 8662640), (31, 8103760), (35, 7177616), (40, 6280414), (56, 4486010), (58, 4331320), (62, 4051880), (70, 3588808), (80, 3140207), (112, 2243005), (116, 2165660), (124, 2025940), (140, 1794404), (145, 1732528), (155, 1620752), (203, 1237520), (217, 1157680), (232, 1082830), (248, 1012970), (280, 897202), (290, 866264), (310, 810376), (406, 618760), (434, 578840), (464, 541415), (496, 506485), (499, 503440), (560, 448601), (580, 433132), (620, 405188), (812, 309380), (868, 289420), (899, 279440), (998, 251720), (1015, 247504), (1085, 231536), (1160, 216566), (1240, 202594), (1624, 154690), (1736, 144710), (1798, 139720), (1996, 125860), (2030, 123752), (2170, 115768), (2320, 108283), (2480, 101297), (2495, 100688), (3248, 77345), (3472, 72355), (3493, 71920), (3596, 69860), (3992, 62930), (4060, 61876), (4340, 57884), (4495, 55888), (4990, 50344), (6293, 39920), (6986, 35960), (7192, 34930), (7984, 31465), (8120, 30938), (8680, 28942), (8990, 27944), (9980, 25172), (12586, 19960), (13972, 17980), (14384, 17465), (14471, 17360), (15469, 16240)]