21618506

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19749814

約数列:

[1, 2, 7, 13, 14, 26, 49, 71, 91, 98, 142, 182, 239, 478, 497, 637, 923, 994, 1274, 1673, 1846, 3107, 3346, 3479, 6214, 6461, 6958, 11711, 12922, 16969, 21749, 23422, 33938, 43498, 45227, 90454, 118783, 152243, 220597, 237566, 304486, 441194, 831481, 1544179, 1662962, 3088358, 10809253, 21618506]

約数ペア:

[(1, 21618506), (2, 10809253), (7, 3088358), (13, 1662962), (14, 1544179), (26, 831481), (49, 441194), (71, 304486), (91, 237566), (98, 220597), (142, 152243), (182, 118783), (239, 90454), (478, 45227), (497, 43498), (637, 33938), (923, 23422), (994, 21749), (1274, 16969), (1673, 12922), (1846, 11711), (3107, 6958), (3346, 6461), (3479, 6214)]