164400640

素因数分解:

$2^9\times 5^1\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:603

約数の個数: 80

約数和(自身を含む): 397742400

約数和(自身を除く): 233341760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 149, 160, 256, 298, 320, 431, 512, 596, 640, 745, 862, 1192, 1280, 1490, 1724, 2155, 2384, 2560, 2980, 3448, 4310, 4768, 5960, 6896, 8620, 9536, 11920, 13792, 17240, 19072, 23840, 27584, 34480, 38144, 47680, 55168, 64219, 68960, 76288, 95360, 110336, 128438, 137920, 190720, 220672, 256876, 275840, 321095, 381440, 513752, 551680, 642190, 1027504, 1103360, 1284380, 2055008, 2568760, 4110016, 5137520, 8220032, 10275040, 16440064, 20550080, 32880128, 41100160, 82200320, 164400640]

約数ペア:

[(1, 164400640), (2, 82200320), (4, 41100160), (5, 32880128), (8, 20550080), (10, 16440064), (16, 10275040), (20, 8220032), (32, 5137520), (40, 4110016), (64, 2568760), (80, 2055008), (128, 1284380), (149, 1103360), (160, 1027504), (256, 642190), (298, 551680), (320, 513752), (431, 381440), (512, 321095), (596, 275840), (640, 256876), (745, 220672), (862, 190720), (1192, 137920), (1280, 128438), (1490, 110336), (1724, 95360), (2155, 76288), (2384, 68960), (2560, 64219), (2980, 55168), (3448, 47680), (4310, 38144), (4768, 34480), (5960, 27584), (6896, 23840), (8620, 19072), (9536, 17240), (11920, 13792)]