20379870

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:327

約数の個数: 128

約数和(自身を含む): 63866880

約数和(自身を除く): 43487010

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 41, 42, 45, 54, 63, 70, 82, 90, 105, 123, 126, 135, 189, 205, 210, 246, 263, 270, 287, 315, 369, 378, 410, 526, 574, 615, 630, 738, 789, 861, 945, 1107, 1230, 1315, 1435, 1578, 1722, 1841, 1845, 1890, 2214, 2367, 2583, 2630, 2870, 3682, 3690, 3945, 4305, 4734, 5166, 5523, 5535, 7101, 7749, 7890, 8610, 9205, 10783, 11046, 11070, 11835, 12915, 14202, 15498, 16569, 18410, 21566, 23670, 25830, 27615, 32349, 33138, 35505, 38745, 49707, 53915, 55230, 64698, 71010, 75481, 77490, 82845, 97047, 99414, 107830, 150962, 161745, 165690, 194094, 226443, 248535, 291141, 323490, 377405, 452886, 485235, 497070, 582282, 679329, 754810, 970470, 1132215, 1358658, 1455705, 2037987, 2264430, 2911410, 3396645, 4075974, 6793290, 10189935, 20379870]

約数ペア:

[(1, 20379870), (2, 10189935), (3, 6793290), (5, 4075974), (6, 3396645), (7, 2911410), (9, 2264430), (10, 2037987), (14, 1455705), (15, 1358658), (18, 1132215), (21, 970470), (27, 754810), (30, 679329), (35, 582282), (41, 497070), (42, 485235), (45, 452886), (54, 377405), (63, 323490), (70, 291141), (82, 248535), (90, 226443), (105, 194094), (123, 165690), (126, 161745), (135, 150962), (189, 107830), (205, 99414), (210, 97047), (246, 82845), (263, 77490), (270, 75481), (287, 71010), (315, 64698), (369, 55230), (378, 53915), (410, 49707), (526, 38745), (574, 35505), (615, 33138), (630, 32349), (738, 27615), (789, 25830), (861, 23670), (945, 21566), (1107, 18410), (1230, 16569), (1315, 15498), (1435, 14202), (1578, 12915), (1722, 11835), (1841, 11070), (1845, 11046), (1890, 10783), (2214, 9205), (2367, 8610), (2583, 7890), (2630, 7749), (2870, 7101), (3682, 5535), (3690, 5523), (3945, 5166), (4305, 4734)]