398774080

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{659}}^1$

素因数の和:768

約数の個数: 112

約数和(自身を含む): 997793280

約数和(自身を除く): 599019200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 80, 122, 124, 155, 160, 244, 248, 305, 310, 320, 488, 496, 610, 620, 659, 976, 992, 1220, 1240, 1318, 1891, 1952, 1984, 2440, 2480, 2636, 3295, 3782, 3904, 4880, 4960, 5272, 6590, 7564, 9455, 9760, 9920, 10544, 13180, 15128, 18910, 19520, 20429, 21088, 26360, 30256, 37820, 40199, 40858, 42176, 52720, 60512, 75640, 80398, 81716, 102145, 105440, 121024, 151280, 160796, 163432, 200995, 204290, 210880, 302560, 321592, 326864, 401990, 408580, 605120, 643184, 653728, 803980, 817160, 1246169, 1286368, 1307456, 1607960, 1634320, 2492338, 2572736, 3215920, 3268640, 4984676, 6230845, 6431840, 6537280, 9969352, 12461690, 12863680, 19938704, 24923380, 39877408, 49846760, 79754816, 99693520, 199387040, 398774080]

約数ペア:

[(1, 398774080), (2, 199387040), (4, 99693520), (5, 79754816), (8, 49846760), (10, 39877408), (16, 24923380), (20, 19938704), (31, 12863680), (32, 12461690), (40, 9969352), (61, 6537280), (62, 6431840), (64, 6230845), (80, 4984676), (122, 3268640), (124, 3215920), (155, 2572736), (160, 2492338), (244, 1634320), (248, 1607960), (305, 1307456), (310, 1286368), (320, 1246169), (488, 817160), (496, 803980), (610, 653728), (620, 643184), (659, 605120), (976, 408580), (992, 401990), (1220, 326864), (1240, 321592), (1318, 302560), (1891, 210880), (1952, 204290), (1984, 200995), (2440, 163432), (2480, 160796), (2636, 151280), (3295, 121024), (3782, 105440), (3904, 102145), (4880, 81716), (4960, 80398), (5272, 75640), (6590, 60512), (7564, 52720), (9455, 42176), (9760, 40858), (9920, 40199), (10544, 37820), (13180, 30256), (15128, 26360), (18910, 21088), (19520, 20429)]