19945760

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7333}}^1$

素因数の和:7365

約数の個数: 48

約数和(自身を含む): 49900536

約数和(自身を除く): 29954776

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, 7333, 14666, 29332, 36665, 58664, 73330, 117328, 124661, 146660, 234656, 249322, 293320, 498644, 586640, 623305, 997288, 1173280, 1246610, 1994576, 2493220, 3989152, 4986440, 9972880, 19945760]

約数ペア:

[(1, 19945760), (2, 9972880), (4, 4986440), (5, 3989152), (8, 2493220), (10, 1994576), (16, 1246610), (17, 1173280), (20, 997288), (32, 623305), (34, 586640), (40, 498644), (68, 293320), (80, 249322), (85, 234656), (136, 146660), (160, 124661), (170, 117328), (272, 73330), (340, 58664), (544, 36665), (680, 29332), (1360, 14666), (2720, 7333)]