31234840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8581}}^1$

素因数の和:8612

約数の個数: 64

約数和(自身を含む): 86506560

約数和(自身を除く): 55271720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 8581, 17162, 34324, 42905, 60067, 68648, 85810, 111553, 120134, 171620, 223106, 240268, 300335, 343240, 446212, 480536, 557765, 600670, 780871, 892424, 1115530, 1201340, 1561742, 2231060, 2402680, 3123484, 3904355, 4462120, 6246968, 7808710, 15617420, 31234840]

約数ペア:

[(1, 31234840), (2, 15617420), (4, 7808710), (5, 6246968), (7, 4462120), (8, 3904355), (10, 3123484), (13, 2402680), (14, 2231060), (20, 1561742), (26, 1201340), (28, 1115530), (35, 892424), (40, 780871), (52, 600670), (56, 557765), (65, 480536), (70, 446212), (91, 343240), (104, 300335), (130, 240268), (140, 223106), (182, 171620), (260, 120134), (280, 111553), (364, 85810), (455, 68648), (520, 60067), (728, 42905), (910, 34324), (1820, 17162), (3640, 8581)]