18498890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 36537912

約数和(自身を除く): 18039022

約数列:

[1, 2, 5, 10, 17, 34, 37, 74, 85, 170, 173, 185, 289, 346, 370, 578, 629, 865, 1258, 1445, 1730, 2890, 2941, 3145, 5882, 6290, 6401, 10693, 12802, 14705, 21386, 29410, 32005, 49997, 53465, 64010, 99994, 106930, 108817, 217634, 249985, 499970, 544085, 1088170, 1849889, 3699778, 9249445, 18498890]

約数ペア:

[(1, 18498890), (2, 9249445), (5, 3699778), (10, 1849889), (17, 1088170), (34, 544085), (37, 499970), (74, 249985), (85, 217634), (170, 108817), (173, 106930), (185, 99994), (289, 64010), (346, 53465), (370, 49997), (578, 32005), (629, 29410), (865, 21386), (1258, 14705), (1445, 12802), (1730, 10693), (2890, 6401), (2941, 6290), (3145, 5882)]