20187145420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{135977}}^1$

素因数の和:136570

約数の個数: 48

約数和(自身を含む): 45734296608

約数和(自身を除く): 25547151188

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 571, 1142, 2284, 2855, 5710, 7423, 11420, 14846, 29692, 37115, 74230, 135977, 148460, 271954, 543908, 679885, 1359770, 1767701, 2719540, 3535402, 7070804, 8838505, 17677010, 35354020, 77642867, 155285734, 310571468, 388214335, 776428670, 1009357271, 1552857340, 2018714542, 4037429084, 5046786355, 10093572710, 20187145420]

約数ペア:

[(1, 20187145420), (2, 10093572710), (4, 5046786355), (5, 4037429084), (10, 2018714542), (13, 1552857340), (20, 1009357271), (26, 776428670), (52, 388214335), (65, 310571468), (130, 155285734), (260, 77642867), (571, 35354020), (1142, 17677010), (2284, 8838505), (2855, 7070804), (5710, 3535402), (7423, 2719540), (11420, 1767701), (14846, 1359770), (29692, 679885), (37115, 543908), (74230, 271954), (135977, 148460)]