31821280

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{11699}}^1$

素因数の和:11731

約数の個数: 48

約数和(自身を含む): 79606800

約数和(自身を除く): 47785520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 11699, 23398, 46796, 58495, 93592, 116990, 187184, 198883, 233980, 374368, 397766, 467960, 795532, 935920, 994415, 1591064, 1871840, 1988830, 3182128, 3977660, 6364256, 7955320, 15910640, 31821280]

約数ペア:

[(1, 31821280), (2, 15910640), (4, 7955320), (5, 6364256), (8, 3977660), (10, 3182128), (16, 1988830), (17, 1871840), (20, 1591064), (32, 994415), (34, 935920), (40, 795532), (68, 467960), (80, 397766), (85, 374368), (136, 233980), (160, 198883), (170, 187184), (272, 116990), (340, 93592), (544, 58495), (680, 46796), (1360, 23398), (2720, 11699)]