27720525

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 56261280

約数和(自身を除く): 28540755

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 49, 57, 75, 95, 105, 133, 147, 175, 245, 285, 397, 399, 475, 525, 665, 735, 931, 1191, 1225, 1425, 1985, 1995, 2779, 2793, 3325, 3675, 4655, 5955, 7543, 8337, 9925, 9975, 13895, 13965, 19453, 22629, 23275, 29775, 37715, 41685, 52801, 58359, 69475, 69825, 97265, 113145, 158403, 188575, 208425, 264005, 291795, 369607, 486325, 565725, 792015, 1108821, 1320025, 1458975, 1848035, 3960075, 5544105, 9240175, 27720525]

約数ペア:

[(1, 27720525), (3, 9240175), (5, 5544105), (7, 3960075), (15, 1848035), (19, 1458975), (21, 1320025), (25, 1108821), (35, 792015), (49, 565725), (57, 486325), (75, 369607), (95, 291795), (105, 264005), (133, 208425), (147, 188575), (175, 158403), (245, 113145), (285, 97265), (397, 69825), (399, 69475), (475, 58359), (525, 52801), (665, 41685), (735, 37715), (931, 29775), (1191, 23275), (1225, 22629), (1425, 19453), (1985, 13965), (1995, 13895), (2779, 9975), (2793, 9925), (3325, 8337), (3675, 7543), (4655, 5955)]