20156970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:387

約数の個数: 64

約数和(自身を含む): 51093504

約数和(自身を除く): 30936534

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 131, 138, 223, 230, 262, 345, 393, 446, 655, 669, 690, 786, 1115, 1310, 1338, 1965, 2230, 3013, 3345, 3930, 5129, 6026, 6690, 9039, 10258, 15065, 15387, 18078, 25645, 29213, 30130, 30774, 45195, 51290, 58426, 76935, 87639, 90390, 146065, 153870, 175278, 292130, 438195, 671899, 876390, 1343798, 2015697, 3359495, 4031394, 6718990, 10078485, 20156970]

約数ペア:

[(1, 20156970), (2, 10078485), (3, 6718990), (5, 4031394), (6, 3359495), (10, 2015697), (15, 1343798), (23, 876390), (30, 671899), (46, 438195), (69, 292130), (115, 175278), (131, 153870), (138, 146065), (223, 90390), (230, 87639), (262, 76935), (345, 58426), (393, 51290), (446, 45195), (655, 30774), (669, 30130), (690, 29213), (786, 25645), (1115, 18078), (1310, 15387), (1338, 15065), (1965, 10258), (2230, 9039), (3013, 6690), (3345, 6026), (3930, 5129)]