20151051520

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{507839}}^1$

素因数の和:507891

約数の個数: 72

約数和(自身を含む): 49825198080

約数和(自身を除く): 29674146560

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, 7936, 9920, 19840, 39680, 507839, 1015678, 2031356, 2539195, 4062712, 5078390, 8125424, 10156780, 15743009, 16250848, 20313560, 31486018, 32501696, 40627120, 62972036, 65003392, 78715045, 81254240, 125944072, 130006784, 157430090, 162508480, 251888144, 314860180, 325016960, 503776288, 629720360, 650033920, 1007552576, 1259440720, 2015105152, 2518881440, 4030210304, 5037762880, 10075525760, 20151051520]

約数ペア:

[(1, 20151051520), (2, 10075525760), (4, 5037762880), (5, 4030210304), (8, 2518881440), (10, 2015105152), (16, 1259440720), (20, 1007552576), (31, 650033920), (32, 629720360), (40, 503776288), (62, 325016960), (64, 314860180), (80, 251888144), (124, 162508480), (128, 157430090), (155, 130006784), (160, 125944072), (248, 81254240), (256, 78715045), (310, 65003392), (320, 62972036), (496, 40627120), (620, 32501696), (640, 31486018), (992, 20313560), (1240, 16250848), (1280, 15743009), (1984, 10156780), (2480, 8125424), (3968, 5078390), (4960, 4062712), (7936, 2539195), (9920, 2031356), (19840, 1015678), (39680, 507839)]