256117040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1693}}^1$

素因数の和:1798

約数の個数: 80

約数和(自身を含む): 625126656

約数和(自身を除く): 369009616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 61, 62, 80, 122, 124, 155, 244, 248, 305, 310, 488, 496, 610, 620, 976, 1220, 1240, 1693, 1891, 2440, 2480, 3386, 3782, 4880, 6772, 7564, 8465, 9455, 13544, 15128, 16930, 18910, 27088, 30256, 33860, 37820, 52483, 67720, 75640, 103273, 104966, 135440, 151280, 206546, 209932, 262415, 413092, 419864, 516365, 524830, 826184, 839728, 1032730, 1049660, 1652368, 2065460, 2099320, 3201463, 4130920, 4198640, 6402926, 8261840, 12805852, 16007315, 25611704, 32014630, 51223408, 64029260, 128058520, 256117040]

約数ペア:

[(1, 256117040), (2, 128058520), (4, 64029260), (5, 51223408), (8, 32014630), (10, 25611704), (16, 16007315), (20, 12805852), (31, 8261840), (40, 6402926), (61, 4198640), (62, 4130920), (80, 3201463), (122, 2099320), (124, 2065460), (155, 1652368), (244, 1049660), (248, 1032730), (305, 839728), (310, 826184), (488, 524830), (496, 516365), (610, 419864), (620, 413092), (976, 262415), (1220, 209932), (1240, 206546), (1693, 151280), (1891, 135440), (2440, 104966), (2480, 103273), (3386, 75640), (3782, 67720), (4880, 52483), (6772, 37820), (7564, 33860), (8465, 30256), (9455, 27088), (13544, 18910), (15128, 16930)]