1018909940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{59}}^1\times {\mathrm{467}}^1$

素因数の和:621

約数の個数: 72

約数和(自身を含む): 2232528480

約数和(自身を除く): 1213618540

約数列:

[1, 2, 4, 5, 10, 20, 43, 59, 86, 118, 172, 215, 236, 295, 430, 467, 590, 860, 934, 1180, 1849, 1868, 2335, 2537, 3698, 4670, 5074, 7396, 9245, 9340, 10148, 12685, 18490, 20081, 25370, 27553, 36980, 40162, 50740, 55106, 80324, 100405, 109091, 110212, 137765, 200810, 218182, 275530, 401620, 436364, 545455, 551060, 863483, 1090910, 1184779, 1726966, 2181820, 2369558, 3453932, 4317415, 4739116, 5923895, 8634830, 11847790, 17269660, 23695580, 50945497, 101890994, 203781988, 254727485, 509454970, 1018909940]

約数ペア:

[(1, 1018909940), (2, 509454970), (4, 254727485), (5, 203781988), (10, 101890994), (20, 50945497), (43, 23695580), (59, 17269660), (86, 11847790), (118, 8634830), (172, 5923895), (215, 4739116), (236, 4317415), (295, 3453932), (430, 2369558), (467, 2181820), (590, 1726966), (860, 1184779), (934, 1090910), (1180, 863483), (1849, 551060), (1868, 545455), (2335, 436364), (2537, 401620), (3698, 275530), (4670, 218182), (5074, 200810), (7396, 137765), (9245, 110212), (9340, 109091), (10148, 100405), (12685, 80324), (18490, 55106), (20081, 50740), (25370, 40162), (27553, 36980)]