261491200

素因数分解:

$2^9\times 5^2\times {\mathrm{31}}^1\times {\mathrm{659}}^1$

素因数の和:718

約数の個数: 120

約数和(自身を含む): 669778560

約数和(自身を除く): 408287360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 128, 155, 160, 200, 248, 256, 310, 320, 400, 496, 512, 620, 640, 659, 775, 800, 992, 1240, 1280, 1318, 1550, 1600, 1984, 2480, 2560, 2636, 3100, 3200, 3295, 3968, 4960, 5272, 6200, 6400, 6590, 7936, 9920, 10544, 12400, 12800, 13180, 15872, 16475, 19840, 20429, 21088, 24800, 26360, 32950, 39680, 40858, 42176, 49600, 52720, 65900, 79360, 81716, 84352, 99200, 102145, 105440, 131800, 163432, 168704, 198400, 204290, 210880, 263600, 326864, 337408, 396800, 408580, 421760, 510725, 527200, 653728, 817160, 843520, 1021450, 1054400, 1307456, 1634320, 1687040, 2042900, 2108800, 2614912, 3268640, 4085800, 4217600, 5229824, 6537280, 8171600, 8435200, 10459648, 13074560, 16343200, 26149120, 32686400, 52298240, 65372800, 130745600, 261491200]

約数ペア:

[(1, 261491200), (2, 130745600), (4, 65372800), (5, 52298240), (8, 32686400), (10, 26149120), (16, 16343200), (20, 13074560), (25, 10459648), (31, 8435200), (32, 8171600), (40, 6537280), (50, 5229824), (62, 4217600), (64, 4085800), (80, 3268640), (100, 2614912), (124, 2108800), (128, 2042900), (155, 1687040), (160, 1634320), (200, 1307456), (248, 1054400), (256, 1021450), (310, 843520), (320, 817160), (400, 653728), (496, 527200), (512, 510725), (620, 421760), (640, 408580), (659, 396800), (775, 337408), (800, 326864), (992, 263600), (1240, 210880), (1280, 204290), (1318, 198400), (1550, 168704), (1600, 163432), (1984, 131800), (2480, 105440), (2560, 102145), (2636, 99200), (3100, 84352), (3200, 81716), (3295, 79360), (3968, 65900), (4960, 52720), (5272, 49600), (6200, 42176), (6400, 40858), (6590, 39680), (7936, 32950), (9920, 26360), (10544, 24800), (12400, 21088), (12800, 20429), (13180, 19840), (15872, 16475)]