21114340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{281}}^1$

素因数の和:337

約数の個数: 72

約数和(自身を含む): 50905512

約数和(自身を除く): 29791172

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 281, 289, 340, 442, 562, 578, 884, 1105, 1124, 1156, 1405, 1445, 2210, 2810, 2890, 3653, 3757, 4420, 4777, 5620, 5780, 7306, 7514, 9554, 14612, 15028, 18265, 18785, 19108, 23885, 36530, 37570, 47770, 62101, 73060, 75140, 81209, 95540, 124202, 162418, 248404, 310505, 324836, 406045, 621010, 812090, 1055717, 1242020, 1624180, 2111434, 4222868, 5278585, 10557170, 21114340]

約数ペア:

[(1, 21114340), (2, 10557170), (4, 5278585), (5, 4222868), (10, 2111434), (13, 1624180), (17, 1242020), (20, 1055717), (26, 812090), (34, 621010), (52, 406045), (65, 324836), (68, 310505), (85, 248404), (130, 162418), (170, 124202), (221, 95540), (260, 81209), (281, 75140), (289, 73060), (340, 62101), (442, 47770), (562, 37570), (578, 36530), (884, 23885), (1105, 19108), (1124, 18785), (1156, 18265), (1405, 15028), (1445, 14612), (2210, 9554), (2810, 7514), (2890, 7306), (3653, 5780), (3757, 5620), (4420, 4777)]