198828721

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 267055488

約数和(自身を除く): 68226767

約数列:

[1, 7, 13, 23, 41, 49, 91, 161, 287, 299, 331, 533, 637, 943, 1127, 2009, 2093, 2317, 3731, 4303, 6601, 7613, 12259, 13571, 14651, 16219, 26117, 30121, 46207, 53291, 85813, 94997, 98969, 176423, 210847, 312133, 373037, 600691, 664979, 692783, 1234961, 2184931, 4057729, 4849481, 8644727, 15294517, 28404103, 198828721]

約数ペア:

[(1, 198828721), (7, 28404103), (13, 15294517), (23, 8644727), (41, 4849481), (49, 4057729), (91, 2184931), (161, 1234961), (287, 692783), (299, 664979), (331, 600691), (533, 373037), (637, 312133), (943, 210847), (1127, 176423), (2009, 98969), (2093, 94997), (2317, 85813), (3731, 53291), (4303, 46207), (6601, 30121), (7613, 26117), (12259, 16219), (13571, 14651)]