28006875

素因数分解:

$3^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:422

約数の個数: 60

約数和(自身を含む): 54582528

約数和(自身を除く): 26575653

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 195, 225, 325, 375, 383, 585, 625, 975, 1125, 1149, 1625, 1875, 1915, 2925, 3447, 4875, 4979, 5625, 5745, 8125, 9575, 14625, 14937, 17235, 24375, 24895, 28725, 44811, 47875, 73125, 74685, 86175, 124475, 143625, 224055, 239375, 373425, 430875, 622375, 718125, 1120275, 1867125, 2154375, 3111875, 5601375, 9335625, 28006875]

約数ペア:

[(1, 28006875), (3, 9335625), (5, 5601375), (9, 3111875), (13, 2154375), (15, 1867125), (25, 1120275), (39, 718125), (45, 622375), (65, 430875), (75, 373425), (117, 239375), (125, 224055), (195, 143625), (225, 124475), (325, 86175), (375, 74685), (383, 73125), (585, 47875), (625, 44811), (975, 28725), (1125, 24895), (1149, 24375), (1625, 17235), (1875, 14937), (1915, 14625), (2925, 9575), (3447, 8125), (4875, 5745), (4979, 5625)]