31305040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1028

約数の個数: 80

約数和(自身を含む): 80994816

約数和(自身を除く): 49689776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 971, 1040, 1240, 1612, 1942, 2015, 2480, 3224, 3884, 4030, 4855, 6448, 7768, 8060, 9710, 12623, 15536, 16120, 19420, 25246, 30101, 32240, 38840, 50492, 60202, 63115, 77680, 100984, 120404, 126230, 150505, 201968, 240808, 252460, 301010, 391313, 481616, 504920, 602020, 782626, 1009840, 1204040, 1565252, 1956565, 2408080, 3130504, 3913130, 6261008, 7826260, 15652520, 31305040]

約数ペア:

[(1, 31305040), (2, 15652520), (4, 7826260), (5, 6261008), (8, 3913130), (10, 3130504), (13, 2408080), (16, 1956565), (20, 1565252), (26, 1204040), (31, 1009840), (40, 782626), (52, 602020), (62, 504920), (65, 481616), (80, 391313), (104, 301010), (124, 252460), (130, 240808), (155, 201968), (208, 150505), (248, 126230), (260, 120404), (310, 100984), (403, 77680), (496, 63115), (520, 60202), (620, 50492), (806, 38840), (971, 32240), (1040, 30101), (1240, 25246), (1612, 19420), (1942, 16120), (2015, 15536), (2480, 12623), (3224, 9710), (3884, 8060), (4030, 7768), (4855, 6448)]