17804540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 42467712

約数和(自身を除く): 24663172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 47, 52, 62, 65, 94, 124, 130, 155, 188, 235, 260, 310, 403, 470, 611, 620, 806, 940, 1222, 1457, 1612, 2015, 2209, 2444, 2914, 3055, 4030, 4418, 5828, 6110, 7285, 8060, 8836, 11045, 12220, 14570, 18941, 22090, 28717, 29140, 37882, 44180, 57434, 68479, 75764, 94705, 114868, 136958, 143585, 189410, 273916, 287170, 342395, 378820, 574340, 684790, 890227, 1369580, 1780454, 3560908, 4451135, 8902270, 17804540]

約数ペア:

[(1, 17804540), (2, 8902270), (4, 4451135), (5, 3560908), (10, 1780454), (13, 1369580), (20, 890227), (26, 684790), (31, 574340), (47, 378820), (52, 342395), (62, 287170), (65, 273916), (94, 189410), (124, 143585), (130, 136958), (155, 114868), (188, 94705), (235, 75764), (260, 68479), (310, 57434), (403, 44180), (470, 37882), (611, 29140), (620, 28717), (806, 22090), (940, 18941), (1222, 14570), (1457, 12220), (1612, 11045), (2015, 8836), (2209, 8060), (2444, 7285), (2914, 6110), (3055, 5828), (4030, 4418)]