20802907820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{1049}}^1$

素因数の和:1212

約数の個数: 144

約数和(自身を含む): 48089462400

約数和(自身を除く): 27286554580

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 73, 85, 94, 146, 170, 188, 235, 289, 292, 340, 365, 470, 578, 730, 799, 940, 1049, 1156, 1241, 1445, 1460, 1598, 2098, 2482, 2890, 3196, 3431, 3995, 4196, 4964, 5245, 5780, 6205, 6862, 7990, 10490, 12410, 13583, 13724, 15980, 17155, 17833, 20980, 21097, 24820, 27166, 34310, 35666, 42194, 49303, 54332, 58327, 67915, 68620, 71332, 76577, 84388, 89165, 98606, 105485, 116654, 135830, 153154, 178330, 197212, 210970, 233308, 246515, 271660, 291635, 303161, 306308, 356660, 382885, 421940, 493030, 583270, 606322, 765770, 838151, 986060, 991559, 1166540, 1212644, 1301809, 1515805, 1531540, 1676302, 1983118, 2603618, 3031610, 3352604, 3599119, 3966236, 4190755, 4957795, 5207236, 6063220, 6509045, 7198238, 8381510, 9915590, 13018090, 14248567, 14396476, 16763020, 17995595, 19831180, 22130753, 26036180, 28497134, 35991190, 44261506, 56994268, 61185023, 71242835, 71982380, 88523012, 110653765, 122370046, 142485670, 221307530, 244740092, 284971340, 305925115, 442615060, 611850230, 1040145391, 1223700460, 2080290782, 4160581564, 5200726955, 10401453910, 20802907820]

約数ペア:

[(1, 20802907820), (2, 10401453910), (4, 5200726955), (5, 4160581564), (10, 2080290782), (17, 1223700460), (20, 1040145391), (34, 611850230), (47, 442615060), (68, 305925115), (73, 284971340), (85, 244740092), (94, 221307530), (146, 142485670), (170, 122370046), (188, 110653765), (235, 88523012), (289, 71982380), (292, 71242835), (340, 61185023), (365, 56994268), (470, 44261506), (578, 35991190), (730, 28497134), (799, 26036180), (940, 22130753), (1049, 19831180), (1156, 17995595), (1241, 16763020), (1445, 14396476), (1460, 14248567), (1598, 13018090), (2098, 9915590), (2482, 8381510), (2890, 7198238), (3196, 6509045), (3431, 6063220), (3995, 5207236), (4196, 4957795), (4964, 4190755), (5245, 3966236), (5780, 3599119), (6205, 3352604), (6862, 3031610), (7990, 2603618), (10490, 1983118), (12410, 1676302), (13583, 1531540), (13724, 1515805), (15980, 1301809), (17155, 1212644), (17833, 1166540), (20980, 991559), (21097, 986060), (24820, 838151), (27166, 765770), (34310, 606322), (35666, 583270), (42194, 493030), (49303, 421940), (54332, 382885), (58327, 356660), (67915, 306308), (68620, 303161), (71332, 291635), (76577, 271660), (84388, 246515), (89165, 233308), (98606, 210970), (105485, 197212), (116654, 178330), (135830, 153154)]