21532890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1021}}^1$

素因数の和:1087

約数の個数: 64

約数和(自身を含む): 55923840

約数和(自身を除く): 34390950

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 37, 38, 57, 74, 95, 111, 114, 185, 190, 222, 285, 370, 555, 570, 703, 1021, 1110, 1406, 2042, 2109, 3063, 3515, 4218, 5105, 6126, 7030, 10210, 10545, 15315, 19399, 21090, 30630, 37777, 38798, 58197, 75554, 96995, 113331, 116394, 188885, 193990, 226662, 290985, 377770, 566655, 581970, 717763, 1133310, 1435526, 2153289, 3588815, 4306578, 7177630, 10766445, 21532890]

約数ペア:

[(1, 21532890), (2, 10766445), (3, 7177630), (5, 4306578), (6, 3588815), (10, 2153289), (15, 1435526), (19, 1133310), (30, 717763), (37, 581970), (38, 566655), (57, 377770), (74, 290985), (95, 226662), (111, 193990), (114, 188885), (185, 116394), (190, 113331), (222, 96995), (285, 75554), (370, 58197), (555, 38798), (570, 37777), (703, 30630), (1021, 21090), (1110, 19399), (1406, 15315), (2042, 10545), (2109, 10210), (3063, 7030), (3515, 6126), (4218, 5105)]