20121219580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{221453}}^1$

素因数の和:221539

約数の個数: 96

約数和(自身を含む): 53574151680

約数和(自身を除く): 33452932100

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 59, 70, 77, 110, 118, 140, 154, 220, 236, 295, 308, 385, 413, 590, 649, 770, 826, 1180, 1298, 1540, 1652, 2065, 2596, 3245, 4130, 4543, 6490, 8260, 9086, 12980, 18172, 22715, 45430, 90860, 221453, 442906, 885812, 1107265, 1550171, 2214530, 2435983, 3100342, 4429060, 4871966, 6200684, 7750855, 9743932, 12179915, 13065727, 15501710, 17051881, 24359830, 26131454, 31003420, 34103762, 48719660, 52262908, 65328635, 68207524, 85259405, 91460089, 130657270, 143722997, 170518810, 182920178, 261314540, 287445994, 341037620, 365840356, 457300445, 574891988, 718614985, 914600890, 1006060979, 1437229970, 1829201780, 2012121958, 2874459940, 4024243916, 5030304895, 10060609790, 20121219580]

約数ペア:

[(1, 20121219580), (2, 10060609790), (4, 5030304895), (5, 4024243916), (7, 2874459940), (10, 2012121958), (11, 1829201780), (14, 1437229970), (20, 1006060979), (22, 914600890), (28, 718614985), (35, 574891988), (44, 457300445), (55, 365840356), (59, 341037620), (70, 287445994), (77, 261314540), (110, 182920178), (118, 170518810), (140, 143722997), (154, 130657270), (220, 91460089), (236, 85259405), (295, 68207524), (308, 65328635), (385, 52262908), (413, 48719660), (590, 34103762), (649, 31003420), (770, 26131454), (826, 24359830), (1180, 17051881), (1298, 15501710), (1540, 13065727), (1652, 12179915), (2065, 9743932), (2596, 7750855), (3245, 6200684), (4130, 4871966), (4543, 4429060), (6490, 3100342), (8260, 2435983), (9086, 2214530), (12980, 1550171), (18172, 1107265), (22715, 885812), (45430, 442906), (90860, 221453)]