20793591

素因数分解:

$3^4\times 7^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 90

約数和(自身を含む): 40388832

約数和(自身を除く): 19595241

約数列:

[1, 3, 7, 9, 13, 21, 27, 31, 39, 49, 63, 81, 91, 93, 117, 147, 169, 189, 217, 273, 279, 351, 403, 441, 507, 567, 637, 651, 819, 837, 1053, 1183, 1209, 1323, 1519, 1521, 1911, 1953, 2457, 2511, 2821, 3549, 3627, 3969, 4557, 4563, 5239, 5733, 5859, 7371, 8281, 8463, 10647, 10881, 13671, 13689, 15717, 17199, 17577, 19747, 24843, 25389, 31941, 32643, 36673, 41013, 47151, 51597, 59241, 74529, 76167, 95823, 110019, 123039, 141453, 177723, 223587, 228501, 256711, 330057, 424359, 533169, 670761, 770133, 990171, 1599507, 2310399, 2970513, 6931197, 20793591]

約数ペア:

[(1, 20793591), (3, 6931197), (7, 2970513), (9, 2310399), (13, 1599507), (21, 990171), (27, 770133), (31, 670761), (39, 533169), (49, 424359), (63, 330057), (81, 256711), (91, 228501), (93, 223587), (117, 177723), (147, 141453), (169, 123039), (189, 110019), (217, 95823), (273, 76167), (279, 74529), (351, 59241), (403, 51597), (441, 47151), (507, 41013), (567, 36673), (637, 32643), (651, 31941), (819, 25389), (837, 24843), (1053, 19747), (1183, 17577), (1209, 17199), (1323, 15717), (1519, 13689), (1521, 13671), (1911, 10881), (1953, 10647), (2457, 8463), (2511, 8281), (2821, 7371), (3549, 5859), (3627, 5733), (3969, 5239), (4557, 4563)]