217511190

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2059

約数の個数: 128

約数和(自身を含む): 645120000

約数和(自身を除く): 427608810

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 31, 39, 45, 54, 62, 65, 78, 90, 93, 117, 130, 135, 155, 186, 195, 234, 270, 279, 310, 351, 390, 403, 465, 558, 585, 702, 806, 837, 930, 1170, 1209, 1395, 1674, 1755, 1999, 2015, 2418, 2790, 3510, 3627, 3998, 4030, 4185, 5997, 6045, 7254, 8370, 9995, 10881, 11994, 12090, 17991, 18135, 19990, 21762, 25987, 29985, 35982, 36270, 51974, 53973, 54405, 59970, 61969, 77961, 89955, 107946, 108810, 123938, 129935, 155922, 179910, 185907, 233883, 259870, 269865, 309845, 371814, 389805, 467766, 539730, 557721, 619690, 701649, 779610, 805597, 929535, 1115442, 1169415, 1403298, 1611194, 1673163, 1859070, 2338830, 2416791, 2788605, 3346326, 3508245, 4027985, 4833582, 5577210, 7016490, 7250373, 8055970, 8365815, 12083955, 14500746, 16731630, 21751119, 24167910, 36251865, 43502238, 72503730, 108755595, 217511190]

約数ペア:

[(1, 217511190), (2, 108755595), (3, 72503730), (5, 43502238), (6, 36251865), (9, 24167910), (10, 21751119), (13, 16731630), (15, 14500746), (18, 12083955), (26, 8365815), (27, 8055970), (30, 7250373), (31, 7016490), (39, 5577210), (45, 4833582), (54, 4027985), (62, 3508245), (65, 3346326), (78, 2788605), (90, 2416791), (93, 2338830), (117, 1859070), (130, 1673163), (135, 1611194), (155, 1403298), (186, 1169415), (195, 1115442), (234, 929535), (270, 805597), (279, 779610), (310, 701649), (351, 619690), (390, 557721), (403, 539730), (465, 467766), (558, 389805), (585, 371814), (702, 309845), (806, 269865), (837, 259870), (930, 233883), (1170, 185907), (1209, 179910), (1395, 155922), (1674, 129935), (1755, 123938), (1999, 108810), (2015, 107946), (2418, 89955), (2790, 77961), (3510, 61969), (3627, 59970), (3998, 54405), (4030, 53973), (4185, 51974), (5997, 36270), (6045, 35982), (7254, 29985), (8370, 25987), (9995, 21762), (10881, 19990), (11994, 18135), (12090, 17991)]