155409980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 361972800

約数和(自身を除く): 206562820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 149, 220, 242, 298, 431, 484, 596, 605, 745, 862, 1210, 1490, 1639, 1724, 2155, 2420, 2980, 3278, 4310, 4741, 6556, 8195, 8620, 9482, 16390, 18029, 18964, 23705, 32780, 36058, 47410, 52151, 64219, 72116, 90145, 94820, 104302, 128438, 180290, 208604, 256876, 260755, 321095, 360580, 521510, 642190, 706409, 1043020, 1284380, 1412818, 2825636, 3532045, 7064090, 7770499, 14128180, 15540998, 31081996, 38852495, 77704990, 155409980]

約数ペア:

[(1, 155409980), (2, 77704990), (4, 38852495), (5, 31081996), (10, 15540998), (11, 14128180), (20, 7770499), (22, 7064090), (44, 3532045), (55, 2825636), (110, 1412818), (121, 1284380), (149, 1043020), (220, 706409), (242, 642190), (298, 521510), (431, 360580), (484, 321095), (596, 260755), (605, 256876), (745, 208604), (862, 180290), (1210, 128438), (1490, 104302), (1639, 94820), (1724, 90145), (2155, 72116), (2420, 64219), (2980, 52151), (3278, 47410), (4310, 36058), (4741, 32780), (6556, 23705), (8195, 18964), (8620, 18029), (9482, 16390)]