81813760

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:448

約数の個数: 144

約数和(自身を含む): 234291456

約数和(自身を除く): 152477696

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 128, 140, 160, 161, 184, 224, 230, 256, 280, 320, 322, 368, 397, 448, 460, 560, 640, 644, 736, 794, 805, 896, 920, 1120, 1280, 1288, 1472, 1588, 1610, 1792, 1840, 1985, 2240, 2576, 2779, 2944, 3176, 3220, 3680, 3970, 4480, 5152, 5558, 5888, 6352, 6440, 7360, 7940, 8960, 9131, 10304, 11116, 12704, 12880, 13895, 14720, 15880, 18262, 20608, 22232, 25408, 25760, 27790, 29440, 31760, 36524, 41216, 44464, 45655, 50816, 51520, 55580, 63520, 63917, 73048, 88928, 91310, 101632, 103040, 111160, 127040, 127834, 146096, 177856, 182620, 206080, 222320, 254080, 255668, 292192, 319585, 355712, 365240, 444640, 508160, 511336, 584384, 639170, 711424, 730480, 889280, 1022672, 1168768, 1278340, 1460960, 1778560, 2045344, 2337536, 2556680, 2921920, 3557120, 4090688, 5113360, 5843840, 8181376, 10226720, 11687680, 16362752, 20453440, 40906880, 81813760]

約数ペア:

[(1, 81813760), (2, 40906880), (4, 20453440), (5, 16362752), (7, 11687680), (8, 10226720), (10, 8181376), (14, 5843840), (16, 5113360), (20, 4090688), (23, 3557120), (28, 2921920), (32, 2556680), (35, 2337536), (40, 2045344), (46, 1778560), (56, 1460960), (64, 1278340), (70, 1168768), (80, 1022672), (92, 889280), (112, 730480), (115, 711424), (128, 639170), (140, 584384), (160, 511336), (161, 508160), (184, 444640), (224, 365240), (230, 355712), (256, 319585), (280, 292192), (320, 255668), (322, 254080), (368, 222320), (397, 206080), (448, 182620), (460, 177856), (560, 146096), (640, 127834), (644, 127040), (736, 111160), (794, 103040), (805, 101632), (896, 91310), (920, 88928), (1120, 73048), (1280, 63917), (1288, 63520), (1472, 55580), (1588, 51520), (1610, 50816), (1792, 45655), (1840, 44464), (1985, 41216), (2240, 36524), (2576, 31760), (2779, 29440), (2944, 27790), (3176, 25760), (3220, 25408), (3680, 22232), (3970, 20608), (4480, 18262), (5152, 15880), (5558, 14720), (5888, 13895), (6352, 12880), (6440, 12704), (7360, 11116), (7940, 10304), (8960, 9131)]