218266825

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 341978112

約数和(自身を除く): 123711287

約数列:

[1, 5, 7, 17, 25, 35, 47, 49, 85, 119, 175, 223, 235, 245, 329, 425, 595, 799, 833, 1115, 1175, 1225, 1561, 1645, 2303, 2975, 3791, 3995, 4165, 5575, 5593, 7805, 8225, 10481, 10927, 11515, 18955, 19975, 20825, 26537, 27965, 39025, 39151, 52405, 54635, 57575, 73367, 94775, 132685, 139825, 178177, 185759, 195755, 262025, 273175, 366835, 513569, 663425, 890885, 928795, 978775, 1247239, 1834175, 2567845, 4454425, 4643975, 6236195, 8730673, 12839225, 31180975, 43653365, 218266825]

約数ペア:

[(1, 218266825), (5, 43653365), (7, 31180975), (17, 12839225), (25, 8730673), (35, 6236195), (47, 4643975), (49, 4454425), (85, 2567845), (119, 1834175), (175, 1247239), (223, 978775), (235, 928795), (245, 890885), (329, 663425), (425, 513569), (595, 366835), (799, 273175), (833, 262025), (1115, 195755), (1175, 185759), (1225, 178177), (1561, 139825), (1645, 132685), (2303, 94775), (2975, 73367), (3791, 57575), (3995, 54635), (4165, 52405), (5575, 39151), (5593, 39025), (7805, 27965), (8225, 26537), (10481, 20825), (10927, 19975), (11515, 18955)]