2019964375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:374

約数の個数: 80

約数和(自身を含む): 3008861856

約数和(自身を除く): 988897481

約数列:

[1, 5, 11, 13, 25, 55, 65, 97, 125, 143, 233, 275, 325, 485, 625, 715, 1067, 1165, 1261, 1375, 1625, 2425, 2563, 3029, 3575, 5335, 5825, 6305, 6875, 8125, 12125, 12815, 13871, 15145, 17875, 22601, 26675, 29125, 31525, 33319, 60625, 64075, 69355, 75725, 89375, 113005, 133375, 145625, 157625, 166595, 248611, 293813, 320375, 346775, 378625, 565025, 666875, 788125, 832975, 1243055, 1469065, 1601875, 1733875, 1893125, 2825125, 3231943, 4164875, 6215275, 7345325, 8669375, 14125625, 16159715, 20824375, 31076375, 36726625, 80798575, 155381875, 183633125, 403992875, 2019964375]

約数ペア:

[(1, 2019964375), (5, 403992875), (11, 183633125), (13, 155381875), (25, 80798575), (55, 36726625), (65, 31076375), (97, 20824375), (125, 16159715), (143, 14125625), (233, 8669375), (275, 7345325), (325, 6215275), (485, 4164875), (625, 3231943), (715, 2825125), (1067, 1893125), (1165, 1733875), (1261, 1601875), (1375, 1469065), (1625, 1243055), (2425, 832975), (2563, 788125), (3029, 666875), (3575, 565025), (5335, 378625), (5825, 346775), (6305, 320375), (6875, 293813), (8125, 248611), (12125, 166595), (12815, 157625), (13871, 145625), (15145, 133375), (17875, 113005), (22601, 89375), (26675, 75725), (29125, 69355), (31525, 64075), (33319, 60625)]