1990309575681

素因数分解:

$3^2\times 7^2\times {\mathrm{181}}^1\times {\mathrm{773}}^1\times {\mathrm{32257}}^1$

素因数の和:33231

約数の個数: 72

約数和(自身を含む): 3367192878504

約数和(自身を除く): 1376883302823

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 181, 441, 543, 773, 1267, 1629, 2319, 3801, 5411, 6957, 8869, 11403, 16233, 26607, 32257, 37877, 48699, 79821, 96771, 113631, 139913, 225799, 290313, 340893, 419739, 677397, 979391, 1259217, 1580593, 2032191, 2938173, 4741779, 5838517, 6855737, 8814519, 14225337, 17515551, 20567211, 24934661, 40869619, 52546653, 61701633, 74803983, 122608857, 174542627, 224411949, 286087333, 367826571, 523627881, 858261999, 1221798389, 1570883643, 2574785997, 3665395167, 4513173641, 10996185501, 13539520923, 31592215487, 40618562769, 94776646461, 221145508409, 284329939383, 663436525227, 1990309575681]

約数ペア:

[(1, 1990309575681), (3, 663436525227), (7, 284329939383), (9, 221145508409), (21, 94776646461), (49, 40618562769), (63, 31592215487), (147, 13539520923), (181, 10996185501), (441, 4513173641), (543, 3665395167), (773, 2574785997), (1267, 1570883643), (1629, 1221798389), (2319, 858261999), (3801, 523627881), (5411, 367826571), (6957, 286087333), (8869, 224411949), (11403, 174542627), (16233, 122608857), (26607, 74803983), (32257, 61701633), (37877, 52546653), (48699, 40869619), (79821, 24934661), (96771, 20567211), (113631, 17515551), (139913, 14225337), (225799, 8814519), (290313, 6855737), (340893, 5838517), (419739, 4741779), (677397, 2938173), (979391, 2032191), (1259217, 1580593)]