400234180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:389

約数の個数: 96

約数和(自身を含む): 907038720

約数和(自身を除く): 506804540

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 73, 74, 124, 146, 148, 155, 185, 239, 292, 310, 365, 370, 478, 620, 730, 740, 956, 1147, 1195, 1460, 2263, 2294, 2390, 2701, 4526, 4588, 4780, 5402, 5735, 7409, 8843, 9052, 10804, 11315, 11470, 13505, 14818, 17447, 17686, 22630, 22940, 27010, 29636, 34894, 35372, 37045, 44215, 45260, 54020, 69788, 74090, 83731, 87235, 88430, 148180, 167462, 174470, 176860, 274133, 334924, 348940, 418655, 540857, 548266, 645539, 837310, 1081714, 1096532, 1291078, 1370665, 1674620, 2163428, 2582156, 2704285, 2741330, 3227695, 5408570, 5482660, 6455390, 10817140, 12910780, 20011709, 40023418, 80046836, 100058545, 200117090, 400234180]

約数ペア:

[(1, 400234180), (2, 200117090), (4, 100058545), (5, 80046836), (10, 40023418), (20, 20011709), (31, 12910780), (37, 10817140), (62, 6455390), (73, 5482660), (74, 5408570), (124, 3227695), (146, 2741330), (148, 2704285), (155, 2582156), (185, 2163428), (239, 1674620), (292, 1370665), (310, 1291078), (365, 1096532), (370, 1081714), (478, 837310), (620, 645539), (730, 548266), (740, 540857), (956, 418655), (1147, 348940), (1195, 334924), (1460, 274133), (2263, 176860), (2294, 174470), (2390, 167462), (2701, 148180), (4526, 88430), (4588, 87235), (4780, 83731), (5402, 74090), (5735, 69788), (7409, 54020), (8843, 45260), (9052, 44215), (10804, 37045), (11315, 35372), (11470, 34894), (13505, 29636), (14818, 27010), (17447, 22940), (17686, 22630)]