19640229

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 32853888

約数和(自身を除く): 13213659

約数列:

[1, 3, 7, 21, 23, 37, 49, 69, 111, 147, 157, 161, 259, 471, 483, 777, 851, 1099, 1127, 1813, 2553, 3297, 3381, 3611, 5439, 5809, 5957, 7693, 10833, 17427, 17871, 23079, 25277, 40663, 41699, 75831, 121989, 125097, 133607, 176939, 284641, 400821, 530817, 853923, 935249, 2805747, 6546743, 19640229]

約数ペア:

[(1, 19640229), (3, 6546743), (7, 2805747), (21, 935249), (23, 853923), (37, 530817), (49, 400821), (69, 284641), (111, 176939), (147, 133607), (157, 125097), (161, 121989), (259, 75831), (471, 41699), (483, 40663), (777, 25277), (851, 23079), (1099, 17871), (1127, 17427), (1813, 10833), (2553, 7693), (3297, 5957), (3381, 5809), (3611, 5439)]