20969325

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 41434848

約数和(自身を除く): 20465523

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 67, 75, 107, 117, 195, 201, 225, 321, 325, 335, 535, 585, 603, 871, 963, 975, 1005, 1391, 1605, 1675, 2613, 2675, 2925, 3015, 4173, 4355, 4815, 5025, 6955, 7169, 7839, 8025, 12519, 13065, 15075, 20865, 21507, 21775, 24075, 34775, 35845, 39195, 62595, 64521, 65325, 93197, 104325, 107535, 179225, 195975, 279591, 312975, 322605, 465985, 537675, 838773, 1397955, 1613025, 2329925, 4193865, 6989775, 20969325]

約数ペア:

[(1, 20969325), (3, 6989775), (5, 4193865), (9, 2329925), (13, 1613025), (15, 1397955), (25, 838773), (39, 537675), (45, 465985), (65, 322605), (67, 312975), (75, 279591), (107, 195975), (117, 179225), (195, 107535), (201, 104325), (225, 93197), (321, 65325), (325, 64521), (335, 62595), (535, 39195), (585, 35845), (603, 34775), (871, 24075), (963, 21775), (975, 21507), (1005, 20865), (1391, 15075), (1605, 13065), (1675, 12519), (2613, 8025), (2675, 7839), (2925, 7169), (3015, 6955), (4173, 5025), (4355, 4815)]