28652780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{571}}^1$

素因数の和:786

約数の個数: 48

約数和(自身を含む): 65249184

約数和(自身を除く): 36596404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 193, 260, 386, 571, 772, 965, 1142, 1930, 2284, 2509, 2855, 3860, 5018, 5710, 7423, 10036, 11420, 12545, 14846, 25090, 29692, 37115, 50180, 74230, 110203, 148460, 220406, 440812, 551015, 1102030, 1432639, 2204060, 2865278, 5730556, 7163195, 14326390, 28652780]

約数ペア:

[(1, 28652780), (2, 14326390), (4, 7163195), (5, 5730556), (10, 2865278), (13, 2204060), (20, 1432639), (26, 1102030), (52, 551015), (65, 440812), (130, 220406), (193, 148460), (260, 110203), (386, 74230), (571, 50180), (772, 37115), (965, 29692), (1142, 25090), (1930, 14846), (2284, 12545), (2509, 11420), (2855, 10036), (3860, 7423), (5018, 5710)]