644488740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{26921}}^1$

素因数の和:26962

約数の個数: 144

約数和(自身を含む): 2351905920

約数和(自身を除く): 1707417180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 1140, 1197, 1260, 1330, 1596, 1710, 1995, 2394, 2660, 3420, 3990, 4788, 5985, 7980, 11970, 23940, 26921, 53842, 80763, 107684, 134605, 161526, 188447, 242289, 269210, 323052, 376894, 403815, 484578, 511499, 538420, 565341, 753788, 807630, 942235, 969156, 1022998, 1130682, 1211445, 1534497, 1615260, 1696023, 1884470, 2045996, 2261364, 2422890, 2557495, 2826705, 3068994, 3392046, 3580493, 3768940, 4603491, 4845780, 5114990, 5653410, 6137988, 6784092, 7160986, 7672485, 8480115, 9206982, 10229980, 10741479, 11306820, 14321972, 15344970, 16960230, 17902465, 18413964, 21482958, 23017455, 30689940, 32224437, 33920460, 35804930, 42965916, 46034910, 53707395, 64448874, 71609860, 92069820, 107414790, 128897748, 161122185, 214829580, 322244370, 644488740]

約数ペア:

[(1, 644488740), (2, 322244370), (3, 214829580), (4, 161122185), (5, 128897748), (6, 107414790), (7, 92069820), (9, 71609860), (10, 64448874), (12, 53707395), (14, 46034910), (15, 42965916), (18, 35804930), (19, 33920460), (20, 32224437), (21, 30689940), (28, 23017455), (30, 21482958), (35, 18413964), (36, 17902465), (38, 16960230), (42, 15344970), (45, 14321972), (57, 11306820), (60, 10741479), (63, 10229980), (70, 9206982), (76, 8480115), (84, 7672485), (90, 7160986), (95, 6784092), (105, 6137988), (114, 5653410), (126, 5114990), (133, 4845780), (140, 4603491), (171, 3768940), (180, 3580493), (190, 3392046), (210, 3068994), (228, 2826705), (252, 2557495), (266, 2422890), (285, 2261364), (315, 2045996), (342, 1884470), (380, 1696023), (399, 1615260), (420, 1534497), (532, 1211445), (570, 1130682), (630, 1022998), (665, 969156), (684, 942235), (798, 807630), (855, 753788), (1140, 565341), (1197, 538420), (1260, 511499), (1330, 484578), (1596, 403815), (1710, 376894), (1995, 323052), (2394, 269210), (2660, 242289), (3420, 188447), (3990, 161526), (4788, 134605), (5985, 107684), (7980, 80763), (11970, 53842), (23940, 26921)]