19280720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14177}}^1$

素因数の和:14207

約数の個数: 40

約数和(自身を含む): 47467944

約数和(自身を除く): 28187224

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14177, 28354, 56708, 70885, 113416, 141770, 226832, 241009, 283540, 482018, 567080, 964036, 1134160, 1205045, 1928072, 2410090, 3856144, 4820180, 9640360, 19280720]

約数ペア:

[(1, 19280720), (2, 9640360), (4, 4820180), (5, 3856144), (8, 2410090), (10, 1928072), (16, 1205045), (17, 1134160), (20, 964036), (34, 567080), (40, 482018), (68, 283540), (80, 241009), (85, 226832), (136, 141770), (170, 113416), (272, 70885), (340, 56708), (680, 28354), (1360, 14177)]