19425250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 40360320

約数和(自身を除く): 20935070

約数列:

[1, 2, 5, 10, 13, 25, 26, 43, 50, 65, 86, 125, 130, 139, 215, 250, 278, 325, 430, 559, 650, 695, 1075, 1118, 1390, 1625, 1807, 2150, 2795, 3250, 3475, 3614, 5375, 5590, 5977, 6950, 9035, 10750, 11954, 13975, 17375, 18070, 27950, 29885, 34750, 45175, 59770, 69875, 77701, 90350, 139750, 149425, 155402, 225875, 298850, 388505, 451750, 747125, 777010, 1494250, 1942525, 3885050, 9712625, 19425250]

約数ペア:

[(1, 19425250), (2, 9712625), (5, 3885050), (10, 1942525), (13, 1494250), (25, 777010), (26, 747125), (43, 451750), (50, 388505), (65, 298850), (86, 225875), (125, 155402), (130, 149425), (139, 139750), (215, 90350), (250, 77701), (278, 69875), (325, 59770), (430, 45175), (559, 34750), (650, 29885), (695, 27950), (1075, 18070), (1118, 17375), (1390, 13975), (1625, 11954), (1807, 10750), (2150, 9035), (2795, 6950), (3250, 5977), (3475, 5590), (3614, 5375)]