19504140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^2$

素因数の和:219

約数の個数: 72

約数和(自身を含む): 56277648

約数和(自身を除く): 36773508

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 73, 122, 146, 183, 219, 244, 292, 305, 365, 366, 438, 610, 730, 732, 876, 915, 1095, 1220, 1460, 1830, 2190, 3660, 4380, 4453, 5329, 8906, 10658, 13359, 15987, 17812, 21316, 22265, 26645, 26718, 31974, 44530, 53290, 53436, 63948, 66795, 79935, 89060, 106580, 133590, 159870, 267180, 319740, 325069, 650138, 975207, 1300276, 1625345, 1950414, 3250690, 3900828, 4876035, 6501380, 9752070, 19504140]

約数ペア:

[(1, 19504140), (2, 9752070), (3, 6501380), (4, 4876035), (5, 3900828), (6, 3250690), (10, 1950414), (12, 1625345), (15, 1300276), (20, 975207), (30, 650138), (60, 325069), (61, 319740), (73, 267180), (122, 159870), (146, 133590), (183, 106580), (219, 89060), (244, 79935), (292, 66795), (305, 63948), (365, 53436), (366, 53290), (438, 44530), (610, 31974), (730, 26718), (732, 26645), (876, 22265), (915, 21316), (1095, 17812), (1220, 15987), (1460, 13359), (1830, 10658), (2190, 8906), (3660, 5329), (4380, 4453)]