280389420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1$

素因数の和:616

約数の個数: 144

約数和(自身を含む): 887927040

約数和(自身を除く): 607537620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 109, 124, 155, 180, 186, 218, 279, 310, 327, 372, 436, 461, 465, 545, 558, 620, 654, 922, 930, 981, 1090, 1116, 1308, 1383, 1395, 1635, 1844, 1860, 1962, 2180, 2305, 2766, 2790, 3270, 3379, 3924, 4149, 4610, 4905, 5532, 5580, 6540, 6758, 6915, 8298, 9220, 9810, 10137, 13516, 13830, 14291, 16596, 16895, 19620, 20274, 20745, 27660, 28582, 30411, 33790, 40548, 41490, 42873, 50249, 50685, 57164, 60822, 67580, 71455, 82980, 85746, 100498, 101370, 121644, 128619, 142910, 150747, 152055, 171492, 200996, 202740, 214365, 251245, 257238, 285820, 301494, 304110, 428730, 452241, 502490, 514476, 602988, 608220, 643095, 753735, 857460, 904482, 1004980, 1286190, 1507470, 1557719, 1808964, 2261205, 2572380, 3014940, 3115438, 4522410, 4673157, 6230876, 7788595, 9044820, 9346314, 14019471, 15577190, 18692628, 23365785, 28038942, 31154380, 46731570, 56077884, 70097355, 93463140, 140194710, 280389420]

約数ペア:

[(1, 280389420), (2, 140194710), (3, 93463140), (4, 70097355), (5, 56077884), (6, 46731570), (9, 31154380), (10, 28038942), (12, 23365785), (15, 18692628), (18, 15577190), (20, 14019471), (30, 9346314), (31, 9044820), (36, 7788595), (45, 6230876), (60, 4673157), (62, 4522410), (90, 3115438), (93, 3014940), (109, 2572380), (124, 2261205), (155, 1808964), (180, 1557719), (186, 1507470), (218, 1286190), (279, 1004980), (310, 904482), (327, 857460), (372, 753735), (436, 643095), (461, 608220), (465, 602988), (545, 514476), (558, 502490), (620, 452241), (654, 428730), (922, 304110), (930, 301494), (981, 285820), (1090, 257238), (1116, 251245), (1308, 214365), (1383, 202740), (1395, 200996), (1635, 171492), (1844, 152055), (1860, 150747), (1962, 142910), (2180, 128619), (2305, 121644), (2766, 101370), (2790, 100498), (3270, 85746), (3379, 82980), (3924, 71455), (4149, 67580), (4610, 60822), (4905, 57164), (5532, 50685), (5580, 50249), (6540, 42873), (6758, 41490), (6915, 40548), (8298, 33790), (9220, 30411), (9810, 28582), (10137, 27660), (13516, 20745), (13830, 20274), (14291, 19620), (16596, 16895)]