221720940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1181}}^1$

素因数の和:1352

約数の個数: 144

約数和(自身を含む): 774446400

約数和(自身を除く): 552725460

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 149, 180, 210, 252, 298, 315, 420, 447, 596, 630, 745, 894, 1043, 1181, 1260, 1341, 1490, 1788, 2086, 2235, 2362, 2682, 2980, 3129, 3543, 4172, 4470, 4724, 5215, 5364, 5905, 6258, 6705, 7086, 8267, 8940, 9387, 10430, 10629, 11810, 12516, 13410, 14172, 15645, 16534, 17715, 18774, 20860, 21258, 23620, 24801, 26820, 31290, 33068, 35430, 37548, 41335, 42516, 46935, 49602, 53145, 62580, 70860, 74403, 82670, 93870, 99204, 106290, 124005, 148806, 165340, 175969, 187740, 212580, 248010, 297612, 351938, 372015, 496020, 527907, 703876, 744030, 879845, 1055814, 1231783, 1488060, 1583721, 1759690, 2111628, 2463566, 2639535, 3167442, 3519380, 3695349, 4927132, 5279070, 6158915, 6334884, 7390698, 7918605, 10558140, 11086047, 12317830, 14781396, 15837210, 18476745, 22172094, 24635660, 31674420, 36953490, 44344188, 55430235, 73906980, 110860470, 221720940]

約数ペア:

[(1, 221720940), (2, 110860470), (3, 73906980), (4, 55430235), (5, 44344188), (6, 36953490), (7, 31674420), (9, 24635660), (10, 22172094), (12, 18476745), (14, 15837210), (15, 14781396), (18, 12317830), (20, 11086047), (21, 10558140), (28, 7918605), (30, 7390698), (35, 6334884), (36, 6158915), (42, 5279070), (45, 4927132), (60, 3695349), (63, 3519380), (70, 3167442), (84, 2639535), (90, 2463566), (105, 2111628), (126, 1759690), (140, 1583721), (149, 1488060), (180, 1231783), (210, 1055814), (252, 879845), (298, 744030), (315, 703876), (420, 527907), (447, 496020), (596, 372015), (630, 351938), (745, 297612), (894, 248010), (1043, 212580), (1181, 187740), (1260, 175969), (1341, 165340), (1490, 148806), (1788, 124005), (2086, 106290), (2235, 99204), (2362, 93870), (2682, 82670), (2980, 74403), (3129, 70860), (3543, 62580), (4172, 53145), (4470, 49602), (4724, 46935), (5215, 42516), (5364, 41335), (5905, 37548), (6258, 35430), (6705, 33068), (7086, 31290), (8267, 26820), (8940, 24801), (9387, 23620), (10430, 21258), (10629, 20860), (11810, 18774), (12516, 17715), (13410, 16534), (14172, 15645)]