209470720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5279}}^1$

素因数の和:5331

約数の個数: 72

約数和(自身を含む): 518031360

約数和(自身を除く): 308560640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 5279, 7936, 9920, 10558, 19840, 21116, 26395, 39680, 42232, 52790, 84464, 105580, 163649, 168928, 211160, 327298, 337856, 422320, 654596, 675712, 818245, 844640, 1309192, 1351424, 1636490, 1689280, 2618384, 3272980, 3378560, 5236768, 6545960, 6757120, 10473536, 13091920, 20947072, 26183840, 41894144, 52367680, 104735360, 209470720]

約数ペア:

[(1, 209470720), (2, 104735360), (4, 52367680), (5, 41894144), (8, 26183840), (10, 20947072), (16, 13091920), (20, 10473536), (31, 6757120), (32, 6545960), (40, 5236768), (62, 3378560), (64, 3272980), (80, 2618384), (124, 1689280), (128, 1636490), (155, 1351424), (160, 1309192), (248, 844640), (256, 818245), (310, 675712), (320, 654596), (496, 422320), (620, 337856), (640, 327298), (992, 211160), (1240, 168928), (1280, 163649), (1984, 105580), (2480, 84464), (3968, 52790), (4960, 42232), (5279, 39680), (7936, 26395), (9920, 21116), (10558, 19840)]