20191395

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:412

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 20128605

約数列:

[1, 3, 5, 7, 15, 19, 21, 29, 35, 57, 87, 95, 105, 133, 145, 203, 285, 349, 399, 435, 551, 609, 665, 1015, 1047, 1653, 1745, 1995, 2443, 2755, 3045, 3857, 5235, 6631, 7329, 8265, 10121, 11571, 12215, 19285, 19893, 30363, 33155, 36645, 46417, 50605, 57855, 70847, 99465, 139251, 151815, 192299, 212541, 232085, 354235, 576897, 696255, 961495, 1062705, 1346093, 2884485, 4038279, 6730465, 20191395]

約数ペア:

[(1, 20191395), (3, 6730465), (5, 4038279), (7, 2884485), (15, 1346093), (19, 1062705), (21, 961495), (29, 696255), (35, 576897), (57, 354235), (87, 232085), (95, 212541), (105, 192299), (133, 151815), (145, 139251), (203, 99465), (285, 70847), (349, 57855), (399, 50605), (435, 46417), (551, 36645), (609, 33155), (665, 30363), (1015, 19893), (1047, 19285), (1653, 12215), (1745, 11571), (1995, 10121), (2443, 8265), (2755, 7329), (3045, 6631), (3857, 5235)]