399559840

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{8641}}^1$

素因数の和:8690

約数の個数: 72

約数和(自身を含む): 1002869532

約数和(自身を除く): 603309692

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 289, 340, 544, 578, 680, 1156, 1360, 1445, 2312, 2720, 2890, 4624, 5780, 8641, 9248, 11560, 17282, 23120, 34564, 43205, 46240, 69128, 86410, 138256, 146897, 172820, 276512, 293794, 345640, 587588, 691280, 734485, 1175176, 1382560, 1468970, 2350352, 2497249, 2937940, 4700704, 4994498, 5875880, 9988996, 11751760, 12486245, 19977992, 23503520, 24972490, 39955984, 49944980, 79911968, 99889960, 199779920, 399559840]

約数ペア:

[(1, 399559840), (2, 199779920), (4, 99889960), (5, 79911968), (8, 49944980), (10, 39955984), (16, 24972490), (17, 23503520), (20, 19977992), (32, 12486245), (34, 11751760), (40, 9988996), (68, 5875880), (80, 4994498), (85, 4700704), (136, 2937940), (160, 2497249), (170, 2350352), (272, 1468970), (289, 1382560), (340, 1175176), (544, 734485), (578, 691280), (680, 587588), (1156, 345640), (1360, 293794), (1445, 276512), (2312, 172820), (2720, 146897), (2890, 138256), (4624, 86410), (5780, 69128), (8641, 46240), (9248, 43205), (11560, 34564), (17282, 23120)]