19908570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 128

約数和(自身を含む): 56567808

約数和(自身を除く): 36659238

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 23, 30, 33, 43, 46, 55, 61, 66, 69, 86, 110, 115, 122, 129, 138, 165, 183, 215, 230, 253, 258, 305, 330, 345, 366, 430, 473, 506, 610, 645, 671, 690, 759, 915, 946, 989, 1265, 1290, 1342, 1403, 1419, 1518, 1830, 1978, 2013, 2365, 2530, 2623, 2806, 2838, 2967, 3355, 3795, 4026, 4209, 4730, 4945, 5246, 5934, 6710, 7015, 7095, 7590, 7869, 8418, 9890, 10065, 10879, 13115, 14030, 14190, 14835, 15433, 15738, 20130, 21045, 21758, 26230, 28853, 29670, 30866, 32637, 39345, 42090, 46299, 54395, 57706, 60329, 65274, 77165, 78690, 86559, 92598, 108790, 120658, 144265, 154330, 163185, 173118, 180987, 231495, 288530, 301645, 326370, 361974, 432795, 462990, 603290, 663619, 865590, 904935, 1327238, 1809870, 1990857, 3318095, 3981714, 6636190, 9954285, 19908570]

約数ペア:

[(1, 19908570), (2, 9954285), (3, 6636190), (5, 3981714), (6, 3318095), (10, 1990857), (11, 1809870), (15, 1327238), (22, 904935), (23, 865590), (30, 663619), (33, 603290), (43, 462990), (46, 432795), (55, 361974), (61, 326370), (66, 301645), (69, 288530), (86, 231495), (110, 180987), (115, 173118), (122, 163185), (129, 154330), (138, 144265), (165, 120658), (183, 108790), (215, 92598), (230, 86559), (253, 78690), (258, 77165), (305, 65274), (330, 60329), (345, 57706), (366, 54395), (430, 46299), (473, 42090), (506, 39345), (610, 32637), (645, 30866), (671, 29670), (690, 28853), (759, 26230), (915, 21758), (946, 21045), (989, 20130), (1265, 15738), (1290, 15433), (1342, 14835), (1403, 14190), (1419, 14030), (1518, 13115), (1830, 10879), (1978, 10065), (2013, 9890), (2365, 8418), (2530, 7869), (2623, 7590), (2806, 7095), (2838, 7015), (2967, 6710), (3355, 5934), (3795, 5246), (4026, 4945), (4209, 4730)]