19990476

素因数分解:

$2^2\times 3^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:177

約数の個数: 120

約数和(自身を含む): 58544640

約数和(自身を除く): 38554164

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 44, 54, 66, 71, 79, 81, 99, 108, 132, 142, 158, 162, 198, 213, 237, 284, 297, 316, 324, 396, 426, 474, 594, 639, 711, 781, 852, 869, 891, 948, 1188, 1278, 1422, 1562, 1738, 1782, 1917, 2133, 2343, 2556, 2607, 2844, 3124, 3476, 3564, 3834, 4266, 4686, 5214, 5609, 5751, 6399, 7029, 7668, 7821, 8532, 9372, 10428, 11218, 11502, 12798, 14058, 15642, 16827, 21087, 22436, 23004, 23463, 25596, 28116, 31284, 33654, 42174, 46926, 50481, 61699, 63261, 67308, 70389, 84348, 93852, 100962, 123398, 126522, 140778, 151443, 185097, 201924, 246796, 253044, 281556, 302886, 370194, 454329, 555291, 605772, 740388, 908658, 1110582, 1665873, 1817316, 2221164, 3331746, 4997619, 6663492, 9995238, 19990476]

約数ペア:

[(1, 19990476), (2, 9995238), (3, 6663492), (4, 4997619), (6, 3331746), (9, 2221164), (11, 1817316), (12, 1665873), (18, 1110582), (22, 908658), (27, 740388), (33, 605772), (36, 555291), (44, 454329), (54, 370194), (66, 302886), (71, 281556), (79, 253044), (81, 246796), (99, 201924), (108, 185097), (132, 151443), (142, 140778), (158, 126522), (162, 123398), (198, 100962), (213, 93852), (237, 84348), (284, 70389), (297, 67308), (316, 63261), (324, 61699), (396, 50481), (426, 46926), (474, 42174), (594, 33654), (639, 31284), (711, 28116), (781, 25596), (852, 23463), (869, 23004), (891, 22436), (948, 21087), (1188, 16827), (1278, 15642), (1422, 14058), (1562, 12798), (1738, 11502), (1782, 11218), (1917, 10428), (2133, 9372), (2343, 8532), (2556, 7821), (2607, 7668), (2844, 7029), (3124, 6399), (3476, 5751), (3564, 5609), (3834, 5214), (4266, 4686)]