20489940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1699}}^1$

素因数の和:1781

約数の個数: 72

約数和(自身を含む): 63117600

約数和(自身を除く): 42627660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 67, 90, 134, 180, 201, 268, 335, 402, 603, 670, 804, 1005, 1206, 1340, 1699, 2010, 2412, 3015, 3398, 4020, 5097, 6030, 6796, 8495, 10194, 12060, 15291, 16990, 20388, 25485, 30582, 33980, 50970, 61164, 76455, 101940, 113833, 152910, 227666, 305820, 341499, 455332, 569165, 682998, 1024497, 1138330, 1365996, 1707495, 2048994, 2276660, 3414990, 4097988, 5122485, 6829980, 10244970, 20489940]

約数ペア:

[(1, 20489940), (2, 10244970), (3, 6829980), (4, 5122485), (5, 4097988), (6, 3414990), (9, 2276660), (10, 2048994), (12, 1707495), (15, 1365996), (18, 1138330), (20, 1024497), (30, 682998), (36, 569165), (45, 455332), (60, 341499), (67, 305820), (90, 227666), (134, 152910), (180, 113833), (201, 101940), (268, 76455), (335, 61164), (402, 50970), (603, 33980), (670, 30582), (804, 25485), (1005, 20388), (1206, 16990), (1340, 15291), (1699, 12060), (2010, 10194), (2412, 8495), (3015, 6796), (3398, 6030), (4020, 5097)]