18780944

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12899}}^1$

素因数の和:12927

約数の個数: 40

約数和(自身を含む): 44788800

約数和(自身を除く): 26007856

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 12899, 25798, 51596, 90293, 103192, 167687, 180586, 206384, 335374, 361172, 670748, 722344, 1173809, 1341496, 1444688, 2347618, 2682992, 4695236, 9390472, 18780944]

約数ペア:

[(1, 18780944), (2, 9390472), (4, 4695236), (7, 2682992), (8, 2347618), (13, 1444688), (14, 1341496), (16, 1173809), (26, 722344), (28, 670748), (52, 361172), (56, 335374), (91, 206384), (104, 180586), (112, 167687), (182, 103192), (208, 90293), (364, 51596), (728, 25798), (1456, 12899)]