643237660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{14639}}^1$

素因数の和:14687

約数の個数: 48

約数和(自身を含む): 1463414400

約数和(自身を除く): 820176740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 2197, 3380, 4394, 8788, 10985, 14639, 21970, 29278, 43940, 58556, 73195, 146390, 190307, 292780, 380614, 761228, 951535, 1903070, 2473991, 3806140, 4947982, 9895964, 12369955, 24739910, 32161883, 49479820, 64323766, 128647532, 160809415, 321618830, 643237660]

約数ペア:

[(1, 643237660), (2, 321618830), (4, 160809415), (5, 128647532), (10, 64323766), (13, 49479820), (20, 32161883), (26, 24739910), (52, 12369955), (65, 9895964), (130, 4947982), (169, 3806140), (260, 2473991), (338, 1903070), (676, 951535), (845, 761228), (1690, 380614), (2197, 292780), (3380, 190307), (4394, 146390), (8788, 73195), (10985, 58556), (14639, 43940), (21970, 29278)]