21561100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1153}}^1$

素因数の和:1195

約数の個数: 72

約数和(自身を含む): 54090288

約数和(自身を除く): 32529188

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 85, 100, 110, 170, 187, 220, 275, 340, 374, 425, 550, 748, 850, 935, 1100, 1153, 1700, 1870, 2306, 3740, 4612, 4675, 5765, 9350, 11530, 12683, 18700, 19601, 23060, 25366, 28825, 39202, 50732, 57650, 63415, 78404, 98005, 115300, 126830, 196010, 215611, 253660, 317075, 392020, 431222, 490025, 634150, 862444, 980050, 1078055, 1268300, 1960100, 2156110, 4312220, 5390275, 10780550, 21561100]

約数ペア:

[(1, 21561100), (2, 10780550), (4, 5390275), (5, 4312220), (10, 2156110), (11, 1960100), (17, 1268300), (20, 1078055), (22, 980050), (25, 862444), (34, 634150), (44, 490025), (50, 431222), (55, 392020), (68, 317075), (85, 253660), (100, 215611), (110, 196010), (170, 126830), (187, 115300), (220, 98005), (275, 78404), (340, 63415), (374, 57650), (425, 50732), (550, 39202), (748, 28825), (850, 25366), (935, 23060), (1100, 19601), (1153, 18700), (1700, 12683), (1870, 11530), (2306, 9350), (3740, 5765), (4612, 4675)]