221783920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{2417}}^1$

素因数の和:2498

約数の個数: 80

約数和(自身を含む): 546893568

約数和(自身を除く): 325109648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 148, 155, 185, 248, 296, 310, 370, 496, 592, 620, 740, 1147, 1240, 1480, 2294, 2417, 2480, 2960, 4588, 4834, 5735, 9176, 9668, 11470, 12085, 18352, 19336, 22940, 24170, 38672, 45880, 48340, 74927, 89429, 91760, 96680, 149854, 178858, 193360, 299708, 357716, 374635, 447145, 599416, 715432, 749270, 894290, 1198832, 1430864, 1498540, 1788580, 2772299, 2997080, 3577160, 5544598, 5994160, 7154320, 11089196, 13861495, 22178392, 27722990, 44356784, 55445980, 110891960, 221783920]

約数ペア:

[(1, 221783920), (2, 110891960), (4, 55445980), (5, 44356784), (8, 27722990), (10, 22178392), (16, 13861495), (20, 11089196), (31, 7154320), (37, 5994160), (40, 5544598), (62, 3577160), (74, 2997080), (80, 2772299), (124, 1788580), (148, 1498540), (155, 1430864), (185, 1198832), (248, 894290), (296, 749270), (310, 715432), (370, 599416), (496, 447145), (592, 374635), (620, 357716), (740, 299708), (1147, 193360), (1240, 178858), (1480, 149854), (2294, 96680), (2417, 91760), (2480, 89429), (2960, 74927), (4588, 48340), (4834, 45880), (5735, 38672), (9176, 24170), (9668, 22940), (11470, 19336), (12085, 18352)]