20123057920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{15073}}^1$

素因数の和:15250

約数の個数: 144

約数和(自身を含む): 55460260800

約数和(自身を除く): 35337202880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 149, 160, 224, 256, 280, 298, 320, 448, 560, 596, 640, 745, 896, 1043, 1120, 1192, 1280, 1490, 1792, 2086, 2240, 2384, 2980, 4172, 4480, 4768, 5215, 5960, 8344, 8960, 9536, 10430, 11920, 15073, 16688, 19072, 20860, 23840, 30146, 33376, 38144, 41720, 47680, 60292, 66752, 75365, 83440, 95360, 105511, 120584, 133504, 150730, 166880, 190720, 211022, 241168, 267008, 301460, 333760, 422044, 482336, 527555, 602920, 667520, 844088, 964672, 1055110, 1205840, 1335040, 1688176, 1929344, 2110220, 2245877, 2411680, 3376352, 3858688, 4220440, 4491754, 4823360, 6752704, 8440880, 8983508, 9646720, 11229385, 13505408, 15721139, 16881760, 17967016, 19293440, 22458770, 27010816, 31442278, 33763520, 35934032, 44917540, 62884556, 67527040, 71868064, 78605695, 89835080, 125769112, 135054080, 143736128, 157211390, 179670160, 251538224, 287472256, 314422780, 359340320, 503076448, 574944512, 628845560, 718680640, 1006152896, 1257691120, 1437361280, 2012305792, 2515382240, 2874722560, 4024611584, 5030764480, 10061528960, 20123057920]

約数ペア:

[(1, 20123057920), (2, 10061528960), (4, 5030764480), (5, 4024611584), (7, 2874722560), (8, 2515382240), (10, 2012305792), (14, 1437361280), (16, 1257691120), (20, 1006152896), (28, 718680640), (32, 628845560), (35, 574944512), (40, 503076448), (56, 359340320), (64, 314422780), (70, 287472256), (80, 251538224), (112, 179670160), (128, 157211390), (140, 143736128), (149, 135054080), (160, 125769112), (224, 89835080), (256, 78605695), (280, 71868064), (298, 67527040), (320, 62884556), (448, 44917540), (560, 35934032), (596, 33763520), (640, 31442278), (745, 27010816), (896, 22458770), (1043, 19293440), (1120, 17967016), (1192, 16881760), (1280, 15721139), (1490, 13505408), (1792, 11229385), (2086, 9646720), (2240, 8983508), (2384, 8440880), (2980, 6752704), (4172, 4823360), (4480, 4491754), (4768, 4220440), (5215, 3858688), (5960, 3376352), (8344, 2411680), (8960, 2245877), (9536, 2110220), (10430, 1929344), (11920, 1688176), (15073, 1335040), (16688, 1205840), (19072, 1055110), (20860, 964672), (23840, 844088), (30146, 667520), (33376, 602920), (38144, 527555), (41720, 482336), (47680, 422044), (60292, 333760), (66752, 301460), (75365, 267008), (83440, 241168), (95360, 211022), (105511, 190720), (120584, 166880), (133504, 150730)]