20705820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:515

約数の個数: 96

約数和(自身を含む): 62657280

約数和(自身を除く): 41951460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 41, 57, 60, 76, 82, 95, 114, 123, 164, 190, 205, 228, 246, 285, 380, 410, 443, 492, 570, 615, 779, 820, 886, 1140, 1230, 1329, 1558, 1772, 2215, 2337, 2460, 2658, 3116, 3895, 4430, 4674, 5316, 6645, 7790, 8417, 8860, 9348, 11685, 13290, 15580, 16834, 18163, 23370, 25251, 26580, 33668, 36326, 42085, 46740, 50502, 54489, 72652, 84170, 90815, 101004, 108978, 126255, 168340, 181630, 217956, 252510, 272445, 345097, 363260, 505020, 544890, 690194, 1035291, 1089780, 1380388, 1725485, 2070582, 3450970, 4141164, 5176455, 6901940, 10352910, 20705820]

約数ペア:

[(1, 20705820), (2, 10352910), (3, 6901940), (4, 5176455), (5, 4141164), (6, 3450970), (10, 2070582), (12, 1725485), (15, 1380388), (19, 1089780), (20, 1035291), (30, 690194), (38, 544890), (41, 505020), (57, 363260), (60, 345097), (76, 272445), (82, 252510), (95, 217956), (114, 181630), (123, 168340), (164, 126255), (190, 108978), (205, 101004), (228, 90815), (246, 84170), (285, 72652), (380, 54489), (410, 50502), (443, 46740), (492, 42085), (570, 36326), (615, 33668), (779, 26580), (820, 25251), (886, 23370), (1140, 18163), (1230, 16834), (1329, 15580), (1558, 13290), (1772, 11685), (2215, 9348), (2337, 8860), (2460, 8417), (2658, 7790), (3116, 6645), (3895, 5316), (4430, 4674)]