20971080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4481}}^1$

素因数の和:4511

約数の個数: 96

約数和(自身を含む): 73415160

約数和(自身を除く): 52444080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4481, 4680, 8962, 13443, 17924, 22405, 26886, 35848, 40329, 44810, 53772, 58253, 67215, 80658, 89620, 107544, 116506, 134430, 161316, 174759, 179240, 201645, 233012, 268860, 291265, 322632, 349518, 403290, 466024, 524277, 537720, 582530, 699036, 806580, 873795, 1048554, 1165060, 1398072, 1613160, 1747590, 2097108, 2330120, 2621385, 3495180, 4194216, 5242770, 6990360, 10485540, 20971080]

約数ペア:

[(1, 20971080), (2, 10485540), (3, 6990360), (4, 5242770), (5, 4194216), (6, 3495180), (8, 2621385), (9, 2330120), (10, 2097108), (12, 1747590), (13, 1613160), (15, 1398072), (18, 1165060), (20, 1048554), (24, 873795), (26, 806580), (30, 699036), (36, 582530), (39, 537720), (40, 524277), (45, 466024), (52, 403290), (60, 349518), (65, 322632), (72, 291265), (78, 268860), (90, 233012), (104, 201645), (117, 179240), (120, 174759), (130, 161316), (156, 134430), (180, 116506), (195, 107544), (234, 89620), (260, 80658), (312, 67215), (360, 58253), (390, 53772), (468, 44810), (520, 40329), (585, 35848), (780, 26886), (936, 22405), (1170, 17924), (1560, 13443), (2340, 8962), (4481, 4680)]