2789020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 6689088

約数和(自身を除く): 3900068

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 631, 884, 1105, 1262, 2210, 2524, 3155, 4420, 6310, 8203, 10727, 12620, 16406, 21454, 32812, 41015, 42908, 53635, 82030, 107270, 139451, 164060, 214540, 278902, 557804, 697255, 1394510, 2789020]

約数ペア:

[(1, 2789020), (2, 1394510), (4, 697255), (5, 557804), (10, 278902), (13, 214540), (17, 164060), (20, 139451), (26, 107270), (34, 82030), (52, 53635), (65, 42908), (68, 41015), (85, 32812), (130, 21454), (170, 16406), (221, 12620), (260, 10727), (340, 8203), (442, 6310), (631, 4420), (884, 3155), (1105, 2524), (1262, 2210)]