8428940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1907}}^1$

素因数の和:1946

約数の個数: 48

約数和(自身を含む): 20194272

約数和(自身を除く): 11765332

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 1907, 2210, 3814, 4420, 7628, 9535, 19070, 24791, 32419, 38140, 49582, 64838, 99164, 123955, 129676, 162095, 247910, 324190, 421447, 495820, 648380, 842894, 1685788, 2107235, 4214470, 8428940]

約数ペア:

[(1, 8428940), (2, 4214470), (4, 2107235), (5, 1685788), (10, 842894), (13, 648380), (17, 495820), (20, 421447), (26, 324190), (34, 247910), (52, 162095), (65, 129676), (68, 123955), (85, 99164), (130, 64838), (170, 49582), (221, 38140), (260, 32419), (340, 24791), (442, 19070), (884, 9535), (1105, 7628), (1907, 4420), (2210, 3814)]