257942940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{138679}}^1$

素因数の和:138722

約数の個数: 48

約数和(自身を含む): 745543680

約数和(自身を除く): 487600740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 138679, 277358, 416037, 554716, 693395, 832074, 1386790, 1664148, 2080185, 2773580, 4160370, 4299049, 8320740, 8598098, 12897147, 17196196, 21495245, 25794294, 42990490, 51588588, 64485735, 85980980, 128971470, 257942940]

約数ペア:

[(1, 257942940), (2, 128971470), (3, 85980980), (4, 64485735), (5, 51588588), (6, 42990490), (10, 25794294), (12, 21495245), (15, 17196196), (20, 12897147), (30, 8598098), (31, 8320740), (60, 4299049), (62, 4160370), (93, 2773580), (124, 2080185), (155, 1664148), (186, 1386790), (310, 832074), (372, 693395), (465, 554716), (620, 416037), (930, 277358), (1860, 138679)]