81043980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{991}}^1$

素因数の和:1079

約数の個数: 96

約数和(自身を含む): 239984640

約数和(自身を除く): 158940660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 47, 58, 60, 87, 94, 116, 141, 145, 174, 188, 235, 282, 290, 348, 435, 470, 564, 580, 705, 870, 940, 991, 1363, 1410, 1740, 1982, 2726, 2820, 2973, 3964, 4089, 4955, 5452, 5946, 6815, 8178, 9910, 11892, 13630, 14865, 16356, 19820, 20445, 27260, 28739, 29730, 40890, 46577, 57478, 59460, 81780, 86217, 93154, 114956, 139731, 143695, 172434, 186308, 232885, 279462, 287390, 344868, 431085, 465770, 558924, 574780, 698655, 862170, 931540, 1350733, 1397310, 1724340, 2701466, 2794620, 4052199, 5402932, 6753665, 8104398, 13507330, 16208796, 20260995, 27014660, 40521990, 81043980]

約数ペア:

[(1, 81043980), (2, 40521990), (3, 27014660), (4, 20260995), (5, 16208796), (6, 13507330), (10, 8104398), (12, 6753665), (15, 5402932), (20, 4052199), (29, 2794620), (30, 2701466), (47, 1724340), (58, 1397310), (60, 1350733), (87, 931540), (94, 862170), (116, 698655), (141, 574780), (145, 558924), (174, 465770), (188, 431085), (235, 344868), (282, 287390), (290, 279462), (348, 232885), (435, 186308), (470, 172434), (564, 143695), (580, 139731), (705, 114956), (870, 93154), (940, 86217), (991, 81780), (1363, 59460), (1410, 57478), (1740, 46577), (1982, 40890), (2726, 29730), (2820, 28739), (2973, 27260), (3964, 20445), (4089, 19820), (4955, 16356), (5452, 14865), (5946, 13630), (6815, 11892), (8178, 9910)]