28273040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20789}}^1$

素因数の和:20819

約数の個数: 40

約数和(自身を含む): 69604920

約数和(自身を除く): 41331880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 20789, 41578, 83156, 103945, 166312, 207890, 332624, 353413, 415780, 706826, 831560, 1413652, 1663120, 1767065, 2827304, 3534130, 5654608, 7068260, 14136520, 28273040]

約数ペア:

[(1, 28273040), (2, 14136520), (4, 7068260), (5, 5654608), (8, 3534130), (10, 2827304), (16, 1767065), (17, 1663120), (20, 1413652), (34, 831560), (40, 706826), (68, 415780), (80, 353413), (85, 332624), (136, 207890), (170, 166312), (272, 103945), (340, 83156), (680, 41578), (1360, 20789)]