28254460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{401}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 64294272

約数和(自身を除く): 36039812

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 271, 401, 542, 802, 1084, 1355, 1604, 2005, 2710, 3523, 4010, 5213, 5420, 7046, 8020, 10426, 14092, 17615, 20852, 26065, 35230, 52130, 70460, 104260, 108671, 217342, 434684, 543355, 1086710, 1412723, 2173420, 2825446, 5650892, 7063615, 14127230, 28254460]

約数ペア:

[(1, 28254460), (2, 14127230), (4, 7063615), (5, 5650892), (10, 2825446), (13, 2173420), (20, 1412723), (26, 1086710), (52, 543355), (65, 434684), (130, 217342), (260, 108671), (271, 104260), (401, 70460), (542, 52130), (802, 35230), (1084, 26065), (1355, 20852), (1604, 17615), (2005, 14092), (2710, 10426), (3523, 8020), (4010, 7046), (5213, 5420)]