19908420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{443}}^1$

素因数の和:569

約数の個数: 96

約数和(自身を含む): 64447488

約数和(自身を除く): 44539068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 107, 140, 210, 214, 321, 420, 428, 443, 535, 642, 749, 886, 1070, 1284, 1329, 1498, 1605, 1772, 2140, 2215, 2247, 2658, 2996, 3101, 3210, 3745, 4430, 4494, 5316, 6202, 6420, 6645, 7490, 8860, 8988, 9303, 11235, 12404, 13290, 14980, 15505, 18606, 22470, 26580, 31010, 37212, 44940, 46515, 47401, 62020, 93030, 94802, 142203, 186060, 189604, 237005, 284406, 331807, 474010, 568812, 663614, 711015, 948020, 995421, 1327228, 1422030, 1659035, 1990842, 2844060, 3318070, 3981684, 4977105, 6636140, 9954210, 19908420]

約数ペア:

[(1, 19908420), (2, 9954210), (3, 6636140), (4, 4977105), (5, 3981684), (6, 3318070), (7, 2844060), (10, 1990842), (12, 1659035), (14, 1422030), (15, 1327228), (20, 995421), (21, 948020), (28, 711015), (30, 663614), (35, 568812), (42, 474010), (60, 331807), (70, 284406), (84, 237005), (105, 189604), (107, 186060), (140, 142203), (210, 94802), (214, 93030), (321, 62020), (420, 47401), (428, 46515), (443, 44940), (535, 37212), (642, 31010), (749, 26580), (886, 22470), (1070, 18606), (1284, 15505), (1329, 14980), (1498, 13290), (1605, 12404), (1772, 11235), (2140, 9303), (2215, 8988), (2247, 8860), (2658, 7490), (2996, 6645), (3101, 6420), (3210, 6202), (3745, 5316), (4430, 4494)]