28355860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{571}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 64576512

約数和(自身を除く): 36220652

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 571, 764, 955, 1142, 1910, 2284, 2483, 2855, 3820, 4966, 5710, 7423, 9932, 11420, 12415, 14846, 24830, 29692, 37115, 49660, 74230, 109061, 148460, 218122, 436244, 545305, 1090610, 1417793, 2181220, 2835586, 5671172, 7088965, 14177930, 28355860]

約数ペア:

[(1, 28355860), (2, 14177930), (4, 7088965), (5, 5671172), (10, 2835586), (13, 2181220), (20, 1417793), (26, 1090610), (52, 545305), (65, 436244), (130, 218122), (191, 148460), (260, 109061), (382, 74230), (571, 49660), (764, 37115), (955, 29692), (1142, 24830), (1910, 14846), (2284, 12415), (2483, 11420), (2855, 9932), (3820, 7423), (4966, 5710)]