21433425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 40845600

約数和(自身を除く): 19412175

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 65, 75, 89, 95, 169, 195, 247, 267, 285, 325, 445, 475, 507, 741, 845, 975, 1157, 1235, 1335, 1425, 1691, 2225, 2535, 3211, 3471, 3705, 4225, 5073, 5785, 6175, 6675, 8455, 9633, 12675, 15041, 16055, 17355, 18525, 21983, 25365, 28925, 42275, 45123, 48165, 65949, 75205, 80275, 86775, 109915, 126825, 225615, 240825, 285779, 329745, 376025, 549575, 857337, 1128075, 1428895, 1648725, 4286685, 7144475, 21433425]

約数ペア:

[(1, 21433425), (3, 7144475), (5, 4286685), (13, 1648725), (15, 1428895), (19, 1128075), (25, 857337), (39, 549575), (57, 376025), (65, 329745), (75, 285779), (89, 240825), (95, 225615), (169, 126825), (195, 109915), (247, 86775), (267, 80275), (285, 75205), (325, 65949), (445, 48165), (475, 45123), (507, 42275), (741, 28925), (845, 25365), (975, 21983), (1157, 18525), (1235, 17355), (1335, 16055), (1425, 15041), (1691, 12675), (2225, 9633), (2535, 8455), (3211, 6675), (3471, 6175), (3705, 5785), (4225, 5073)]