19887870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:130

約数の個数: 128

約数和(自身を含む): 55157760

約数和(自身を除く): 35269890

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 23, 30, 37, 38, 41, 46, 57, 69, 74, 82, 95, 111, 114, 115, 123, 138, 185, 190, 205, 222, 230, 246, 285, 345, 370, 410, 437, 555, 570, 615, 690, 703, 779, 851, 874, 943, 1110, 1230, 1311, 1406, 1517, 1558, 1702, 1886, 2109, 2185, 2337, 2553, 2622, 2829, 3034, 3515, 3895, 4218, 4255, 4370, 4551, 4674, 4715, 5106, 5658, 6555, 7030, 7585, 7790, 8510, 9102, 9430, 10545, 11685, 12765, 13110, 14145, 15170, 16169, 17917, 21090, 22755, 23370, 25530, 28290, 28823, 32338, 34891, 35834, 45510, 48507, 53751, 57646, 69782, 80845, 86469, 89585, 97014, 104673, 107502, 144115, 161690, 172938, 174455, 179170, 209346, 242535, 268755, 288230, 348910, 432345, 485070, 523365, 537510, 662929, 864690, 1046730, 1325858, 1988787, 3314645, 3977574, 6629290, 9943935, 19887870]

約数ペア:

[(1, 19887870), (2, 9943935), (3, 6629290), (5, 3977574), (6, 3314645), (10, 1988787), (15, 1325858), (19, 1046730), (23, 864690), (30, 662929), (37, 537510), (38, 523365), (41, 485070), (46, 432345), (57, 348910), (69, 288230), (74, 268755), (82, 242535), (95, 209346), (111, 179170), (114, 174455), (115, 172938), (123, 161690), (138, 144115), (185, 107502), (190, 104673), (205, 97014), (222, 89585), (230, 86469), (246, 80845), (285, 69782), (345, 57646), (370, 53751), (410, 48507), (437, 45510), (555, 35834), (570, 34891), (615, 32338), (690, 28823), (703, 28290), (779, 25530), (851, 23370), (874, 22755), (943, 21090), (1110, 17917), (1230, 16169), (1311, 15170), (1406, 14145), (1517, 13110), (1558, 12765), (1702, 11685), (1886, 10545), (2109, 9430), (2185, 9102), (2337, 8510), (2553, 7790), (2622, 7585), (2829, 7030), (3034, 6555), (3515, 5658), (3895, 5106), (4218, 4715), (4255, 4674), (4370, 4551)]