20964638

素因数分解:

$2^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 37134720

約数和(自身を除く): 16170082

約数列:

[1, 2, 17, 19, 23, 34, 38, 46, 83, 166, 289, 323, 391, 437, 578, 646, 782, 874, 1411, 1577, 1909, 2822, 3154, 3818, 5491, 6647, 7429, 10982, 13294, 14858, 23987, 26809, 32453, 36271, 47974, 53618, 64906, 72542, 126293, 252586, 455753, 551701, 616607, 911506, 1103402, 1233214, 10482319, 20964638]

約数ペア:

[(1, 20964638), (2, 10482319), (17, 1233214), (19, 1103402), (23, 911506), (34, 616607), (38, 551701), (46, 455753), (83, 252586), (166, 126293), (289, 72542), (323, 64906), (391, 53618), (437, 47974), (578, 36271), (646, 32453), (782, 26809), (874, 23987), (1411, 14858), (1577, 13294), (1909, 10982), (2822, 7429), (3154, 6647), (3818, 5491)]