18274940

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 39584160

約数和(自身を除く): 21309220

約数列:

[1, 2, 4, 5, 10, 20, 83, 101, 109, 166, 202, 218, 332, 404, 415, 436, 505, 545, 830, 1010, 1090, 1660, 2020, 2180, 8383, 9047, 11009, 16766, 18094, 22018, 33532, 36188, 41915, 44036, 45235, 55045, 83830, 90470, 110090, 167660, 180940, 220180, 913747, 1827494, 3654988, 4568735, 9137470, 18274940]

約数ペア:

[(1, 18274940), (2, 9137470), (4, 4568735), (5, 3654988), (10, 1827494), (20, 913747), (83, 220180), (101, 180940), (109, 167660), (166, 110090), (202, 90470), (218, 83830), (332, 55045), (404, 45235), (415, 44036), (436, 41915), (505, 36188), (545, 33532), (830, 22018), (1010, 18094), (1090, 16766), (1660, 11009), (2020, 9047), (2180, 8383)]