20749482

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{359}}^1$

素因数の和:412

約数の個数: 72

約数和(自身を含む): 51386400

約数和(自身を除く): 30636918

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 169, 171, 234, 247, 338, 342, 359, 494, 507, 718, 741, 1014, 1077, 1482, 1521, 2154, 2223, 3042, 3211, 3231, 4446, 4667, 6422, 6462, 6821, 9334, 9633, 13642, 14001, 19266, 20463, 28002, 28899, 40926, 42003, 57798, 60671, 61389, 84006, 88673, 121342, 122778, 177346, 182013, 266019, 364026, 532038, 546039, 798057, 1092078, 1152749, 1596114, 2305498, 3458247, 6916494, 10374741, 20749482]

約数ペア:

[(1, 20749482), (2, 10374741), (3, 6916494), (6, 3458247), (9, 2305498), (13, 1596114), (18, 1152749), (19, 1092078), (26, 798057), (38, 546039), (39, 532038), (57, 364026), (78, 266019), (114, 182013), (117, 177346), (169, 122778), (171, 121342), (234, 88673), (247, 84006), (338, 61389), (342, 60671), (359, 57798), (494, 42003), (507, 40926), (718, 28899), (741, 28002), (1014, 20463), (1077, 19266), (1482, 14001), (1521, 13642), (2154, 9633), (2223, 9334), (3042, 6821), (3211, 6462), (3231, 6422), (4446, 4667)]