81780075

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:485

約数の個数: 72

約数和(自身を含む): 160323072

約数和(自身を除く): 78542997

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 73, 75, 117, 195, 219, 225, 325, 365, 383, 585, 657, 949, 975, 1095, 1149, 1825, 1915, 2847, 2925, 3285, 3447, 4745, 4979, 5475, 5745, 8541, 9575, 14235, 14937, 16425, 17235, 23725, 24895, 27959, 28725, 42705, 44811, 71175, 74685, 83877, 86175, 124475, 139795, 213525, 224055, 251631, 363467, 373425, 419385, 698975, 1090401, 1120275, 1258155, 1817335, 2096925, 3271203, 5452005, 6290775, 9086675, 16356015, 27260025, 81780075]

約数ペア:

[(1, 81780075), (3, 27260025), (5, 16356015), (9, 9086675), (13, 6290775), (15, 5452005), (25, 3271203), (39, 2096925), (45, 1817335), (65, 1258155), (73, 1120275), (75, 1090401), (117, 698975), (195, 419385), (219, 373425), (225, 363467), (325, 251631), (365, 224055), (383, 213525), (585, 139795), (657, 124475), (949, 86175), (975, 83877), (1095, 74685), (1149, 71175), (1825, 44811), (1915, 42705), (2847, 28725), (2925, 27959), (3285, 24895), (3447, 23725), (4745, 17235), (4979, 16425), (5475, 14937), (5745, 14235), (8541, 9575)]