8412820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 20291040

約数和(自身を除く): 11878220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 131, 169, 190, 247, 260, 262, 338, 380, 494, 524, 655, 676, 845, 988, 1235, 1310, 1690, 1703, 2470, 2489, 2620, 3211, 3380, 3406, 4940, 4978, 6422, 6812, 8515, 9956, 12445, 12844, 16055, 17030, 22139, 24890, 32110, 32357, 34060, 44278, 49780, 64220, 64714, 88556, 110695, 129428, 161785, 221390, 323570, 420641, 442780, 647140, 841282, 1682564, 2103205, 4206410, 8412820]

約数ペア:

[(1, 8412820), (2, 4206410), (4, 2103205), (5, 1682564), (10, 841282), (13, 647140), (19, 442780), (20, 420641), (26, 323570), (38, 221390), (52, 161785), (65, 129428), (76, 110695), (95, 88556), (130, 64714), (131, 64220), (169, 49780), (190, 44278), (247, 34060), (260, 32357), (262, 32110), (338, 24890), (380, 22139), (494, 17030), (524, 16055), (655, 12844), (676, 12445), (845, 9956), (988, 8515), (1235, 6812), (1310, 6422), (1690, 4978), (1703, 4940), (2470, 3406), (2489, 3380), (2620, 3211)]