21317940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2417}}^1$

素因数の和:2446

約数の個数: 108

約数和(自身を含む): 75252996

約数和(自身を除く): 53935056

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2417, 2940, 4410, 4834, 7251, 8820, 9668, 12085, 14502, 16919, 21753, 24170, 29004, 33838, 36255, 43506, 48340, 50757, 67676, 72510, 84595, 87012, 101514, 108765, 118433, 145020, 152271, 169190, 203028, 217530, 236866, 253785, 304542, 338380, 355299, 435060, 473732, 507570, 592165, 609084, 710598, 761355, 1015140, 1065897, 1184330, 1421196, 1522710, 1776495, 2131794, 2368660, 3045420, 3552990, 4263588, 5329485, 7105980, 10658970, 21317940]

約数ペア:

[(1, 21317940), (2, 10658970), (3, 7105980), (4, 5329485), (5, 4263588), (6, 3552990), (7, 3045420), (9, 2368660), (10, 2131794), (12, 1776495), (14, 1522710), (15, 1421196), (18, 1184330), (20, 1065897), (21, 1015140), (28, 761355), (30, 710598), (35, 609084), (36, 592165), (42, 507570), (45, 473732), (49, 435060), (60, 355299), (63, 338380), (70, 304542), (84, 253785), (90, 236866), (98, 217530), (105, 203028), (126, 169190), (140, 152271), (147, 145020), (180, 118433), (196, 108765), (210, 101514), (245, 87012), (252, 84595), (294, 72510), (315, 67676), (420, 50757), (441, 48340), (490, 43506), (588, 36255), (630, 33838), (735, 29004), (882, 24170), (980, 21753), (1260, 16919), (1470, 14502), (1764, 12085), (2205, 9668), (2417, 8820), (2940, 7251), (4410, 4834)]