51816680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 124422480

約数和(自身を除く): 72605800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 181, 340, 362, 421, 680, 724, 842, 905, 1448, 1684, 1810, 2105, 3077, 3368, 3620, 4210, 6154, 7157, 7240, 8420, 12308, 14314, 15385, 16840, 24616, 28628, 30770, 35785, 57256, 61540, 71570, 76201, 123080, 143140, 152402, 286280, 304804, 381005, 609608, 762010, 1295417, 1524020, 2590834, 3048040, 5181668, 6477085, 10363336, 12954170, 25908340, 51816680]

約数ペア:

[(1, 51816680), (2, 25908340), (4, 12954170), (5, 10363336), (8, 6477085), (10, 5181668), (17, 3048040), (20, 2590834), (34, 1524020), (40, 1295417), (68, 762010), (85, 609608), (136, 381005), (170, 304804), (181, 286280), (340, 152402), (362, 143140), (421, 123080), (680, 76201), (724, 71570), (842, 61540), (905, 57256), (1448, 35785), (1684, 30770), (1810, 28628), (2105, 24616), (3077, 16840), (3368, 15385), (3620, 14314), (4210, 12308), (6154, 8420), (7157, 7240)]