42579940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{421}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 96773040

約数和(自身を除く): 54193100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 389, 421, 778, 842, 1556, 1684, 1945, 2105, 3890, 4210, 5057, 5473, 7780, 8420, 10114, 10946, 20228, 21892, 25285, 27365, 50570, 54730, 101140, 109460, 163769, 327538, 655076, 818845, 1637690, 2128997, 3275380, 4257994, 8515988, 10644985, 21289970, 42579940]

約数ペア:

[(1, 42579940), (2, 21289970), (4, 10644985), (5, 8515988), (10, 4257994), (13, 3275380), (20, 2128997), (26, 1637690), (52, 818845), (65, 655076), (130, 327538), (260, 163769), (389, 109460), (421, 101140), (778, 54730), (842, 50570), (1556, 27365), (1684, 25285), (1945, 21892), (2105, 20228), (3890, 10946), (4210, 10114), (5057, 8420), (5473, 7780)]