31388985

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 58786560

約数和(自身を除く): 27397575

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 53, 107, 123, 135, 159, 205, 265, 321, 369, 477, 535, 615, 795, 963, 1107, 1431, 1605, 1845, 2173, 2385, 2889, 4387, 4815, 5535, 5671, 6519, 7155, 10865, 13161, 14445, 17013, 19557, 21935, 28355, 32595, 39483, 51039, 58671, 65805, 85065, 97785, 118449, 153117, 197415, 232511, 255195, 293355, 592245, 697533, 765585, 1162555, 2092599, 3487665, 6277797, 10462995, 31388985]

約数ペア:

[(1, 31388985), (3, 10462995), (5, 6277797), (9, 3487665), (15, 2092599), (27, 1162555), (41, 765585), (45, 697533), (53, 592245), (107, 293355), (123, 255195), (135, 232511), (159, 197415), (205, 153117), (265, 118449), (321, 97785), (369, 85065), (477, 65805), (535, 58671), (615, 51039), (795, 39483), (963, 32595), (1107, 28355), (1431, 21935), (1605, 19557), (1845, 17013), (2173, 14445), (2385, 13161), (2889, 10865), (4387, 7155), (4815, 6519), (5535, 5671)]