20341520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14957}}^1$

素因数の和:14987

約数の個数: 40

約数和(自身を含む): 50079384

約数和(自身を除く): 29737864

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14957, 29914, 59828, 74785, 119656, 149570, 239312, 254269, 299140, 508538, 598280, 1017076, 1196560, 1271345, 2034152, 2542690, 4068304, 5085380, 10170760, 20341520]

約数ペア:

[(1, 20341520), (2, 10170760), (4, 5085380), (5, 4068304), (8, 2542690), (10, 2034152), (16, 1271345), (17, 1196560), (20, 1017076), (34, 598280), (40, 508538), (68, 299140), (80, 254269), (85, 239312), (136, 149570), (170, 119656), (272, 74785), (340, 59828), (680, 29914), (1360, 14957)]