21621978

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{829}}^1$

素因数の和:873

約数の個数: 80

約数和(自身を含む): 57847680

約数和(自身を除く): 36225702

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 27, 42, 46, 54, 63, 69, 81, 126, 138, 161, 162, 189, 207, 322, 378, 414, 483, 567, 621, 829, 966, 1134, 1242, 1449, 1658, 1863, 2487, 2898, 3726, 4347, 4974, 5803, 7461, 8694, 11606, 13041, 14922, 17409, 19067, 22383, 26082, 34818, 38134, 44766, 52227, 57201, 67149, 104454, 114402, 133469, 134298, 156681, 171603, 266938, 313362, 343206, 400407, 470043, 514809, 800814, 940086, 1029618, 1201221, 1544427, 2402442, 3088854, 3603663, 7207326, 10810989, 21621978]

約数ペア:

[(1, 21621978), (2, 10810989), (3, 7207326), (6, 3603663), (7, 3088854), (9, 2402442), (14, 1544427), (18, 1201221), (21, 1029618), (23, 940086), (27, 800814), (42, 514809), (46, 470043), (54, 400407), (63, 343206), (69, 313362), (81, 266938), (126, 171603), (138, 156681), (161, 134298), (162, 133469), (189, 114402), (207, 104454), (322, 67149), (378, 57201), (414, 52227), (483, 44766), (567, 38134), (621, 34818), (829, 26082), (966, 22383), (1134, 19067), (1242, 17409), (1449, 14922), (1658, 13041), (1863, 11606), (2487, 8694), (2898, 7461), (3726, 5803), (4347, 4974)]