28663960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{277}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 70056000

約数和(自身を除く): 41392040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 199, 260, 277, 398, 520, 554, 796, 995, 1108, 1385, 1592, 1990, 2216, 2587, 2770, 3601, 3980, 5174, 5540, 7202, 7960, 10348, 11080, 12935, 14404, 18005, 20696, 25870, 28808, 36010, 51740, 55123, 72020, 103480, 110246, 144040, 220492, 275615, 440984, 551230, 716599, 1102460, 1433198, 2204920, 2866396, 3582995, 5732792, 7165990, 14331980, 28663960]

約数ペア:

[(1, 28663960), (2, 14331980), (4, 7165990), (5, 5732792), (8, 3582995), (10, 2866396), (13, 2204920), (20, 1433198), (26, 1102460), (40, 716599), (52, 551230), (65, 440984), (104, 275615), (130, 220492), (199, 144040), (260, 110246), (277, 103480), (398, 72020), (520, 55123), (554, 51740), (796, 36010), (995, 28808), (1108, 25870), (1385, 20696), (1592, 18005), (1990, 14404), (2216, 12935), (2587, 11080), (2770, 10348), (3601, 7960), (3980, 7202), (5174, 5540)]