8140340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 18627840

約数和(自身を除く): 10487500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 239, 260, 262, 478, 524, 655, 956, 1195, 1310, 1703, 2390, 2620, 3107, 3406, 4780, 6214, 6812, 8515, 12428, 15535, 17030, 31070, 31309, 34060, 62140, 62618, 125236, 156545, 313090, 407017, 626180, 814034, 1628068, 2035085, 4070170, 8140340]

約数ペア:

[(1, 8140340), (2, 4070170), (4, 2035085), (5, 1628068), (10, 814034), (13, 626180), (20, 407017), (26, 313090), (52, 156545), (65, 125236), (130, 62618), (131, 62140), (239, 34060), (260, 31309), (262, 31070), (478, 17030), (524, 15535), (655, 12428), (956, 8515), (1195, 6812), (1310, 6214), (1703, 4780), (2390, 3406), (2620, 3107)]