20347788419

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{317}}^1\times {\mathrm{421}}^1\times {\mathrm{947}}^1$

素因数の和:1715

約数の個数: 32

約数和(自身を含む): 24425819136

約数和(自身を除く): 4078030717

約数列:

[1, 7, 23, 161, 317, 421, 947, 2219, 2947, 6629, 7291, 9683, 21781, 51037, 67781, 133457, 152467, 300199, 398687, 934199, 2101393, 2790809, 3069511, 6904577, 9169801, 21486577, 48332039, 64188607, 126383779, 884686453, 2906826917, 20347788419]

約数ペア:

[(1, 20347788419), (7, 2906826917), (23, 884686453), (161, 126383779), (317, 64188607), (421, 48332039), (947, 21486577), (2219, 9169801), (2947, 6904577), (6629, 3069511), (7291, 2790809), (9683, 2101393), (21781, 934199), (51037, 398687), (67781, 300199), (133457, 152467)]