338688640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:490

約数の個数: 128

約数和(自身を含む): 857387520

約数和(自身を除く): 518698880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 62, 64, 80, 86, 124, 128, 155, 160, 172, 215, 248, 310, 320, 344, 397, 430, 496, 620, 640, 688, 794, 860, 992, 1240, 1333, 1376, 1588, 1720, 1984, 1985, 2480, 2666, 2752, 3176, 3440, 3968, 3970, 4960, 5332, 5504, 6352, 6665, 6880, 7940, 9920, 10664, 12307, 12704, 13330, 13760, 15880, 17071, 19840, 21328, 24614, 25408, 26660, 27520, 31760, 34142, 42656, 49228, 50816, 53320, 61535, 63520, 68284, 85312, 85355, 98456, 106640, 123070, 127040, 136568, 170624, 170710, 196912, 213280, 246140, 254080, 273136, 341420, 393824, 426560, 492280, 529201, 546272, 682840, 787648, 853120, 984560, 1058402, 1092544, 1365680, 1575296, 1969120, 2116804, 2185088, 2646005, 2731360, 3938240, 4233608, 5292010, 5462720, 7876480, 8467216, 10584020, 10925440, 16934432, 21168040, 33868864, 42336080, 67737728, 84672160, 169344320, 338688640]

約数ペア:

[(1, 338688640), (2, 169344320), (4, 84672160), (5, 67737728), (8, 42336080), (10, 33868864), (16, 21168040), (20, 16934432), (31, 10925440), (32, 10584020), (40, 8467216), (43, 7876480), (62, 5462720), (64, 5292010), (80, 4233608), (86, 3938240), (124, 2731360), (128, 2646005), (155, 2185088), (160, 2116804), (172, 1969120), (215, 1575296), (248, 1365680), (310, 1092544), (320, 1058402), (344, 984560), (397, 853120), (430, 787648), (496, 682840), (620, 546272), (640, 529201), (688, 492280), (794, 426560), (860, 393824), (992, 341420), (1240, 273136), (1333, 254080), (1376, 246140), (1588, 213280), (1720, 196912), (1984, 170710), (1985, 170624), (2480, 136568), (2666, 127040), (2752, 123070), (3176, 106640), (3440, 98456), (3968, 85355), (3970, 85312), (4960, 68284), (5332, 63520), (5504, 61535), (6352, 53320), (6665, 50816), (6880, 49228), (7940, 42656), (9920, 34142), (10664, 31760), (12307, 27520), (12704, 26660), (13330, 25408), (13760, 24614), (15880, 21328), (17071, 19840)]