19880388

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{823}}^1$

素因数の和:905

約数の個数: 72

約数和(自身を含む): 55788096

約数和(自身を除く): 35907708

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 61, 66, 99, 122, 132, 183, 198, 244, 366, 396, 549, 671, 732, 823, 1098, 1342, 1646, 2013, 2196, 2469, 2684, 3292, 4026, 4938, 6039, 7407, 8052, 9053, 9876, 12078, 14814, 18106, 24156, 27159, 29628, 36212, 50203, 54318, 81477, 100406, 108636, 150609, 162954, 200812, 301218, 325908, 451827, 552233, 602436, 903654, 1104466, 1656699, 1807308, 2208932, 3313398, 4970097, 6626796, 9940194, 19880388]

約数ペア:

[(1, 19880388), (2, 9940194), (3, 6626796), (4, 4970097), (6, 3313398), (9, 2208932), (11, 1807308), (12, 1656699), (18, 1104466), (22, 903654), (33, 602436), (36, 552233), (44, 451827), (61, 325908), (66, 301218), (99, 200812), (122, 162954), (132, 150609), (183, 108636), (198, 100406), (244, 81477), (366, 54318), (396, 50203), (549, 36212), (671, 29628), (732, 27159), (823, 24156), (1098, 18106), (1342, 14814), (1646, 12078), (2013, 9876), (2196, 9053), (2469, 8052), (2684, 7407), (3292, 6039), (4026, 4938)]