391840

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:125

約数の個数: 48

約数和(自身を含む): 967680

約数和(自身を除く): 575840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 79, 80, 124, 155, 158, 160, 248, 310, 316, 395, 496, 620, 632, 790, 992, 1240, 1264, 1580, 2449, 2480, 2528, 3160, 4898, 4960, 6320, 9796, 12245, 12640, 19592, 24490, 39184, 48980, 78368, 97960, 195920, 391840]

約数ペア:

[(1, 391840), (2, 195920), (4, 97960), (5, 78368), (8, 48980), (10, 39184), (16, 24490), (20, 19592), (31, 12640), (32, 12245), (40, 9796), (62, 6320), (79, 4960), (80, 4898), (124, 3160), (155, 2528), (158, 2480), (160, 2449), (248, 1580), (310, 1264), (316, 1240), (395, 992), (496, 790), (620, 632)]