20811540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:277

約数の個数: 96

約数和(自身を含む): 61415424

約数和(自身を除く): 40603884

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 67, 93, 124, 134, 155, 167, 186, 201, 268, 310, 334, 335, 372, 402, 465, 501, 620, 668, 670, 804, 835, 930, 1002, 1005, 1340, 1670, 1860, 2004, 2010, 2077, 2505, 3340, 4020, 4154, 5010, 5177, 6231, 8308, 10020, 10354, 10385, 11189, 12462, 15531, 20708, 20770, 22378, 24924, 25885, 31062, 31155, 33567, 41540, 44756, 51770, 55945, 62124, 62310, 67134, 77655, 103540, 111890, 124620, 134268, 155310, 167835, 223780, 310620, 335670, 346859, 671340, 693718, 1040577, 1387436, 1734295, 2081154, 3468590, 4162308, 5202885, 6937180, 10405770, 20811540]

約数ペア:

[(1, 20811540), (2, 10405770), (3, 6937180), (4, 5202885), (5, 4162308), (6, 3468590), (10, 2081154), (12, 1734295), (15, 1387436), (20, 1040577), (30, 693718), (31, 671340), (60, 346859), (62, 335670), (67, 310620), (93, 223780), (124, 167835), (134, 155310), (155, 134268), (167, 124620), (186, 111890), (201, 103540), (268, 77655), (310, 67134), (334, 62310), (335, 62124), (372, 55945), (402, 51770), (465, 44756), (501, 41540), (620, 33567), (668, 31155), (670, 31062), (804, 25885), (835, 24924), (930, 22378), (1002, 20770), (1005, 20708), (1340, 15531), (1670, 12462), (1860, 11189), (2004, 10385), (2010, 10354), (2077, 10020), (2505, 8308), (3340, 6231), (4020, 5177), (4154, 5010)]