20538180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 68612544

約数和(自身を除く): 48074364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 67, 78, 90, 117, 130, 131, 134, 156, 180, 195, 201, 234, 260, 262, 268, 335, 390, 393, 402, 468, 524, 585, 603, 655, 670, 780, 786, 804, 871, 1005, 1170, 1179, 1206, 1310, 1340, 1572, 1703, 1742, 1965, 2010, 2340, 2358, 2412, 2613, 2620, 3015, 3406, 3484, 3930, 4020, 4355, 4716, 5109, 5226, 5895, 6030, 6812, 7839, 7860, 8515, 8710, 8777, 10218, 10452, 11790, 12060, 13065, 15327, 15678, 17030, 17420, 17554, 20436, 23580, 25545, 26130, 26331, 30654, 31356, 34060, 35108, 39195, 43885, 51090, 52260, 52662, 61308, 76635, 78390, 78993, 87770, 102180, 105324, 114101, 131655, 153270, 156780, 157986, 175540, 228202, 263310, 306540, 315972, 342303, 394965, 456404, 526620, 570505, 684606, 789930, 1026909, 1141010, 1369212, 1579860, 1711515, 2053818, 2282020, 3423030, 4107636, 5134545, 6846060, 10269090, 20538180]

約数ペア:

[(1, 20538180), (2, 10269090), (3, 6846060), (4, 5134545), (5, 4107636), (6, 3423030), (9, 2282020), (10, 2053818), (12, 1711515), (13, 1579860), (15, 1369212), (18, 1141010), (20, 1026909), (26, 789930), (30, 684606), (36, 570505), (39, 526620), (45, 456404), (52, 394965), (60, 342303), (65, 315972), (67, 306540), (78, 263310), (90, 228202), (117, 175540), (130, 157986), (131, 156780), (134, 153270), (156, 131655), (180, 114101), (195, 105324), (201, 102180), (234, 87770), (260, 78993), (262, 78390), (268, 76635), (335, 61308), (390, 52662), (393, 52260), (402, 51090), (468, 43885), (524, 39195), (585, 35108), (603, 34060), (655, 31356), (670, 30654), (780, 26331), (786, 26130), (804, 25545), (871, 23580), (1005, 20436), (1170, 17554), (1179, 17420), (1206, 17030), (1310, 15678), (1340, 15327), (1572, 13065), (1703, 12060), (1742, 11790), (1965, 10452), (2010, 10218), (2340, 8777), (2358, 8710), (2412, 8515), (2613, 7860), (2620, 7839), (3015, 6812), (3406, 6030), (3484, 5895), (3930, 5226), (4020, 5109), (4355, 4716)]