20749740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:383

約数の個数: 96

約数和(自身を含む): 64108800

約数和(自身を除く): 43359060

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 149, 165, 211, 220, 298, 330, 422, 447, 596, 633, 660, 745, 844, 894, 1055, 1266, 1490, 1639, 1788, 2110, 2235, 2321, 2532, 2980, 3165, 3278, 4220, 4470, 4642, 4917, 6330, 6556, 6963, 8195, 8940, 9284, 9834, 11605, 12660, 13926, 16390, 19668, 23210, 24585, 27852, 31439, 32780, 34815, 46420, 49170, 62878, 69630, 94317, 98340, 125756, 139260, 157195, 188634, 314390, 345829, 377268, 471585, 628780, 691658, 943170, 1037487, 1383316, 1729145, 1886340, 2074974, 3458290, 4149948, 5187435, 6916580, 10374870, 20749740]

約数ペア:

[(1, 20749740), (2, 10374870), (3, 6916580), (4, 5187435), (5, 4149948), (6, 3458290), (10, 2074974), (11, 1886340), (12, 1729145), (15, 1383316), (20, 1037487), (22, 943170), (30, 691658), (33, 628780), (44, 471585), (55, 377268), (60, 345829), (66, 314390), (110, 188634), (132, 157195), (149, 139260), (165, 125756), (211, 98340), (220, 94317), (298, 69630), (330, 62878), (422, 49170), (447, 46420), (596, 34815), (633, 32780), (660, 31439), (745, 27852), (844, 24585), (894, 23210), (1055, 19668), (1266, 16390), (1490, 13926), (1639, 12660), (1788, 11605), (2110, 9834), (2235, 9284), (2321, 8940), (2532, 8195), (2980, 6963), (3165, 6556), (3278, 6330), (4220, 4917), (4470, 4642)]