19609840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14419}}^1$

素因数の和:14449

約数の個数: 40

約数和(自身を含む): 48278160

約数和(自身を除く): 28668320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14419, 28838, 57676, 72095, 115352, 144190, 230704, 245123, 288380, 490246, 576760, 980492, 1153520, 1225615, 1960984, 2451230, 3921968, 4902460, 9804920, 19609840]

約数ペア:

[(1, 19609840), (2, 9804920), (4, 4902460), (5, 3921968), (8, 2451230), (10, 1960984), (16, 1225615), (17, 1153520), (20, 980492), (34, 576760), (40, 490246), (68, 288380), (80, 245123), (85, 230704), (136, 144190), (170, 115352), (272, 72095), (340, 57676), (680, 28838), (1360, 14419)]