20157540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:669

約数の個数: 96

約数和(自身を含む): 62299776

約数和(自身を除く): 42142236

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 43, 52, 60, 65, 78, 86, 129, 130, 156, 172, 195, 215, 258, 260, 390, 430, 516, 559, 601, 645, 780, 860, 1118, 1202, 1290, 1677, 1803, 2236, 2404, 2580, 2795, 3005, 3354, 3606, 5590, 6010, 6708, 7212, 7813, 8385, 9015, 11180, 12020, 15626, 16770, 18030, 23439, 25843, 31252, 33540, 36060, 39065, 46878, 51686, 77529, 78130, 93756, 103372, 117195, 129215, 155058, 156260, 234390, 258430, 310116, 335959, 387645, 468780, 516860, 671918, 775290, 1007877, 1343836, 1550580, 1679795, 2015754, 3359590, 4031508, 5039385, 6719180, 10078770, 20157540]

約数ペア:

[(1, 20157540), (2, 10078770), (3, 6719180), (4, 5039385), (5, 4031508), (6, 3359590), (10, 2015754), (12, 1679795), (13, 1550580), (15, 1343836), (20, 1007877), (26, 775290), (30, 671918), (39, 516860), (43, 468780), (52, 387645), (60, 335959), (65, 310116), (78, 258430), (86, 234390), (129, 156260), (130, 155058), (156, 129215), (172, 117195), (195, 103372), (215, 93756), (258, 78130), (260, 77529), (390, 51686), (430, 46878), (516, 39065), (559, 36060), (601, 33540), (645, 31252), (780, 25843), (860, 23439), (1118, 18030), (1202, 16770), (1290, 15626), (1677, 12020), (1803, 11180), (2236, 9015), (2404, 8385), (2580, 7813), (2795, 7212), (3005, 6708), (3354, 6010), (3606, 5590)]