21940275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{79}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 43886080

約数和(自身を除く): 21945805

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 69, 75, 79, 105, 115, 161, 175, 237, 345, 395, 483, 525, 529, 553, 575, 805, 1185, 1587, 1659, 1725, 1817, 1975, 2415, 2645, 2765, 3703, 4025, 5451, 5925, 7935, 8295, 9085, 11109, 12075, 12719, 13225, 13825, 18515, 27255, 38157, 39675, 41475, 41791, 45425, 55545, 63595, 92575, 125373, 136275, 190785, 208955, 277725, 292537, 317975, 626865, 877611, 953925, 1044775, 1462685, 3134325, 4388055, 7313425, 21940275]

約数ペア:

[(1, 21940275), (3, 7313425), (5, 4388055), (7, 3134325), (15, 1462685), (21, 1044775), (23, 953925), (25, 877611), (35, 626865), (69, 317975), (75, 292537), (79, 277725), (105, 208955), (115, 190785), (161, 136275), (175, 125373), (237, 92575), (345, 63595), (395, 55545), (483, 45425), (525, 41791), (529, 41475), (553, 39675), (575, 38157), (805, 27255), (1185, 18515), (1587, 13825), (1659, 13225), (1725, 12719), (1817, 12075), (1975, 11109), (2415, 9085), (2645, 8295), (2765, 7935), (3703, 5925), (4025, 5451)]