245451320

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{68947}}^1$

素因数の和:69047

約数の個数: 32

約数和(自身を含む): 558478800

約数和(自身を除く): 313027480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 68947, 137894, 275788, 344735, 551576, 689470, 1378940, 2757880, 6136283, 12272566, 24545132, 30681415, 49090264, 61362830, 122725660, 245451320]

約数ペア:

[(1, 245451320), (2, 122725660), (4, 61362830), (5, 49090264), (8, 30681415), (10, 24545132), (20, 12272566), (40, 6136283), (89, 2757880), (178, 1378940), (356, 689470), (445, 551576), (712, 344735), (890, 275788), (1780, 137894), (3560, 68947)]