16380780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21001}}^1$

素因数の和:21026

約数の個数: 48

約数和(自身を含む): 49396704

約数和(自身を除く): 33015924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 21001, 42002, 63003, 84004, 105005, 126006, 210010, 252012, 273013, 315015, 420020, 546026, 630030, 819039, 1092052, 1260060, 1365065, 1638078, 2730130, 3276156, 4095195, 5460260, 8190390, 16380780]

約数ペア:

[(1, 16380780), (2, 8190390), (3, 5460260), (4, 4095195), (5, 3276156), (6, 2730130), (10, 1638078), (12, 1365065), (13, 1260060), (15, 1092052), (20, 819039), (26, 630030), (30, 546026), (39, 420020), (52, 315015), (60, 273013), (65, 252012), (78, 210010), (130, 126006), (156, 105005), (195, 84004), (260, 63003), (390, 42002), (780, 21001)]