19721880

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{2029}}^1$

素因数の和:2055

約数の個数: 96

約数和(自身を含む): 66502800

約数和(自身を除く): 46780920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 810, 972, 1080, 1215, 1620, 1944, 2029, 2430, 3240, 4058, 4860, 6087, 8116, 9720, 10145, 12174, 16232, 18261, 20290, 24348, 30435, 36522, 40580, 48696, 54783, 60870, 73044, 81160, 91305, 109566, 121740, 146088, 164349, 182610, 219132, 243480, 273915, 328698, 365220, 438264, 493047, 547830, 657396, 730440, 821745, 986094, 1095660, 1314792, 1643490, 1972188, 2191320, 2465235, 3286980, 3944376, 4930470, 6573960, 9860940, 19721880]

約数ペア:

[(1, 19721880), (2, 9860940), (3, 6573960), (4, 4930470), (5, 3944376), (6, 3286980), (8, 2465235), (9, 2191320), (10, 1972188), (12, 1643490), (15, 1314792), (18, 1095660), (20, 986094), (24, 821745), (27, 730440), (30, 657396), (36, 547830), (40, 493047), (45, 438264), (54, 365220), (60, 328698), (72, 273915), (81, 243480), (90, 219132), (108, 182610), (120, 164349), (135, 146088), (162, 121740), (180, 109566), (216, 91305), (243, 81160), (270, 73044), (324, 60870), (360, 54783), (405, 48696), (486, 40580), (540, 36522), (648, 30435), (810, 24348), (972, 20290), (1080, 18261), (1215, 16232), (1620, 12174), (1944, 10145), (2029, 9720), (2430, 8116), (3240, 6087), (4058, 4860)]