161640220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{8681}}^1$

素因数の和:8723

約数の個数: 72

約数和(自身を含む): 415694160

約数和(自身を除く): 254053940

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1862, 2660, 3724, 4655, 8681, 9310, 17362, 18620, 34724, 43405, 60767, 86810, 121534, 164939, 173620, 243068, 303835, 329878, 425369, 607670, 659756, 824695, 850738, 1154573, 1215340, 1649390, 1701476, 2126845, 2309146, 3298780, 4253690, 4618292, 5772865, 8082011, 8507380, 11545730, 16164022, 23091460, 32328044, 40410055, 80820110, 161640220]

約数ペア:

[(1, 161640220), (2, 80820110), (4, 40410055), (5, 32328044), (7, 23091460), (10, 16164022), (14, 11545730), (19, 8507380), (20, 8082011), (28, 5772865), (35, 4618292), (38, 4253690), (49, 3298780), (70, 2309146), (76, 2126845), (95, 1701476), (98, 1649390), (133, 1215340), (140, 1154573), (190, 850738), (196, 824695), (245, 659756), (266, 607670), (380, 425369), (490, 329878), (532, 303835), (665, 243068), (931, 173620), (980, 164939), (1330, 121534), (1862, 86810), (2660, 60767), (3724, 43405), (4655, 34724), (8681, 18620), (9310, 17362)]