81515460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8039}}^1$

素因数の和:8077

約数の個数: 72

約数和(自身を含む): 247181760

約数和(自身を除く): 165666300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2535, 3380, 5070, 8039, 10140, 16078, 24117, 32156, 40195, 48234, 80390, 96468, 104507, 120585, 160780, 209014, 241170, 313521, 418028, 482340, 522535, 627042, 1045070, 1254084, 1358591, 1567605, 2090140, 2717182, 3135210, 4075773, 5434364, 6270420, 6792955, 8151546, 13585910, 16303092, 20378865, 27171820, 40757730, 81515460]

約数ペア:

[(1, 81515460), (2, 40757730), (3, 27171820), (4, 20378865), (5, 16303092), (6, 13585910), (10, 8151546), (12, 6792955), (13, 6270420), (15, 5434364), (20, 4075773), (26, 3135210), (30, 2717182), (39, 2090140), (52, 1567605), (60, 1358591), (65, 1254084), (78, 1045070), (130, 627042), (156, 522535), (169, 482340), (195, 418028), (260, 313521), (338, 241170), (390, 209014), (507, 160780), (676, 120585), (780, 104507), (845, 96468), (1014, 80390), (1690, 48234), (2028, 40195), (2535, 32156), (3380, 24117), (5070, 16078), (8039, 10140)]