21581300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1277}}^1$

素因数の和:1317

約数の個数: 54

約数和(自身を含む): 50750658

約数和(自身を除く): 29169358

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1277, 1300, 1690, 2554, 3380, 4225, 5108, 6385, 8450, 12770, 16601, 16900, 25540, 31925, 33202, 63850, 66404, 83005, 127700, 166010, 215813, 332020, 415025, 431626, 830050, 863252, 1079065, 1660100, 2158130, 4316260, 5395325, 10790650, 21581300]

約数ペア:

[(1, 21581300), (2, 10790650), (4, 5395325), (5, 4316260), (10, 2158130), (13, 1660100), (20, 1079065), (25, 863252), (26, 830050), (50, 431626), (52, 415025), (65, 332020), (100, 215813), (130, 166010), (169, 127700), (260, 83005), (325, 66404), (338, 63850), (650, 33202), (676, 31925), (845, 25540), (1277, 16900), (1300, 16601), (1690, 12770), (2554, 8450), (3380, 6385), (4225, 5108)]