397788280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{2153}}^1$

素因数の和:2344

約数の個数: 64

約数和(自身を含む): 930528000

約数和(自身を除く): 532739720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 149, 155, 248, 298, 310, 596, 620, 745, 1192, 1240, 1490, 2153, 2980, 4306, 4619, 5960, 8612, 9238, 10765, 17224, 18476, 21530, 23095, 36952, 43060, 46190, 66743, 86120, 92380, 133486, 184760, 266972, 320797, 333715, 533944, 641594, 667430, 1283188, 1334860, 1603985, 2566376, 2669720, 3207970, 6415940, 9944707, 12831880, 19889414, 39778828, 49723535, 79557656, 99447070, 198894140, 397788280]

約数ペア:

[(1, 397788280), (2, 198894140), (4, 99447070), (5, 79557656), (8, 49723535), (10, 39778828), (20, 19889414), (31, 12831880), (40, 9944707), (62, 6415940), (124, 3207970), (149, 2669720), (155, 2566376), (248, 1603985), (298, 1334860), (310, 1283188), (596, 667430), (620, 641594), (745, 533944), (1192, 333715), (1240, 320797), (1490, 266972), (2153, 184760), (2980, 133486), (4306, 92380), (4619, 86120), (5960, 66743), (8612, 46190), (9238, 43060), (10765, 36952), (17224, 23095), (18476, 21530)]