18894590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 40727232

約数和(自身を除く): 21832642

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 73, 110, 130, 143, 146, 181, 286, 362, 365, 715, 730, 803, 905, 949, 1430, 1606, 1810, 1898, 1991, 2353, 3982, 4015, 4706, 4745, 8030, 9490, 9955, 10439, 11765, 13213, 19910, 20878, 23530, 25883, 26426, 51766, 52195, 66065, 104390, 129415, 132130, 145343, 171769, 258830, 290686, 343538, 726715, 858845, 1453430, 1717690, 1889459, 3778918, 9447295, 18894590]

約数ペア:

[(1, 18894590), (2, 9447295), (5, 3778918), (10, 1889459), (11, 1717690), (13, 1453430), (22, 858845), (26, 726715), (55, 343538), (65, 290686), (73, 258830), (110, 171769), (130, 145343), (143, 132130), (146, 129415), (181, 104390), (286, 66065), (362, 52195), (365, 51766), (715, 26426), (730, 25883), (803, 23530), (905, 20878), (949, 19910), (1430, 13213), (1606, 11765), (1810, 10439), (1898, 9955), (1991, 9490), (2353, 8030), (3982, 4745), (4015, 4706)]