18893680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:554

約数の個数: 80

約数和(自身を含む): 48684384

約数和(自身を除く): 29790704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 481, 491, 520, 592, 740, 962, 982, 1040, 1480, 1924, 1964, 2405, 2455, 2960, 3848, 3928, 4810, 4910, 6383, 7696, 7856, 9620, 9820, 12766, 18167, 19240, 19640, 25532, 31915, 36334, 38480, 39280, 51064, 63830, 72668, 90835, 102128, 127660, 145336, 181670, 236171, 255320, 290672, 363340, 472342, 510640, 726680, 944684, 1180855, 1453360, 1889368, 2361710, 3778736, 4723420, 9446840, 18893680]

約数ペア:

[(1, 18893680), (2, 9446840), (4, 4723420), (5, 3778736), (8, 2361710), (10, 1889368), (13, 1453360), (16, 1180855), (20, 944684), (26, 726680), (37, 510640), (40, 472342), (52, 363340), (65, 290672), (74, 255320), (80, 236171), (104, 181670), (130, 145336), (148, 127660), (185, 102128), (208, 90835), (260, 72668), (296, 63830), (370, 51064), (481, 39280), (491, 38480), (520, 36334), (592, 31915), (740, 25532), (962, 19640), (982, 19240), (1040, 18167), (1480, 12766), (1924, 9820), (1964, 9620), (2405, 7856), (2455, 7696), (2960, 6383), (3848, 4910), (3928, 4810)]