442780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1$

素因数の和:166

約数の個数: 36

約数和(自身を含む): 1014552

約数和(自身を除く): 571772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 169, 260, 262, 338, 524, 655, 676, 845, 1310, 1690, 1703, 2620, 3380, 3406, 6812, 8515, 17030, 22139, 34060, 44278, 88556, 110695, 221390, 442780]

約数ペア:

[(1, 442780), (2, 221390), (4, 110695), (5, 88556), (10, 44278), (13, 34060), (20, 22139), (26, 17030), (52, 8515), (65, 6812), (130, 3406), (131, 3380), (169, 2620), (260, 1703), (262, 1690), (338, 1310), (524, 845), (655, 676)]