18944720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7639}}^1$

素因数の和:7683

約数の個数: 40

約数和(自身を含む): 45473280

約数和(自身を除く): 26528560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7639, 15278, 30556, 38195, 61112, 76390, 122224, 152780, 236809, 305560, 473618, 611120, 947236, 1184045, 1894472, 2368090, 3788944, 4736180, 9472360, 18944720]

約数ペア:

[(1, 18944720), (2, 9472360), (4, 4736180), (5, 3788944), (8, 2368090), (10, 1894472), (16, 1184045), (20, 947236), (31, 611120), (40, 473618), (62, 305560), (80, 236809), (124, 152780), (155, 122224), (248, 76390), (310, 61112), (496, 38195), (620, 30556), (1240, 15278), (2480, 7639)]