21141250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1301}}^1$

素因数の和:1336

約数の個数: 40

約数和(自身を含む): 42708204

約数和(自身を除く): 21566954

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1301, 1625, 2602, 3250, 6505, 8125, 13010, 16250, 16913, 32525, 33826, 65050, 84565, 162625, 169130, 325250, 422825, 813125, 845650, 1626250, 2114125, 4228250, 10570625, 21141250]

約数ペア:

[(1, 21141250), (2, 10570625), (5, 4228250), (10, 2114125), (13, 1626250), (25, 845650), (26, 813125), (50, 422825), (65, 325250), (125, 169130), (130, 162625), (250, 84565), (325, 65050), (625, 33826), (650, 32525), (1250, 16913), (1301, 16250), (1625, 13010), (2602, 8125), (3250, 6505)]