21106020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27059}}^1$

素因数の和:27084

約数の個数: 48

約数和(自身を含む): 63645120

約数和(自身を除く): 42539100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27059, 54118, 81177, 108236, 135295, 162354, 270590, 324708, 351767, 405885, 541180, 703534, 811770, 1055301, 1407068, 1623540, 1758835, 2110602, 3517670, 4221204, 5276505, 7035340, 10553010, 21106020]

約数ペア:

[(1, 21106020), (2, 10553010), (3, 7035340), (4, 5276505), (5, 4221204), (6, 3517670), (10, 2110602), (12, 1758835), (13, 1623540), (15, 1407068), (20, 1055301), (26, 811770), (30, 703534), (39, 541180), (52, 405885), (60, 351767), (65, 324708), (78, 270590), (130, 162354), (156, 135295), (195, 108236), (260, 81177), (390, 54118), (780, 27059)]