21209040

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{1091}}^1$

素因数の和:1119

約数の個数: 120

約数和(自身を含む): 73932768

約数和(自身を除く): 52723728

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 972, 1080, 1091, 1215, 1296, 1620, 1944, 2160, 2182, 2430, 3240, 3273, 3888, 4364, 4860, 5455, 6480, 6546, 8728, 9720, 9819, 10910, 13092, 16365, 17456, 19440, 19638, 21820, 26184, 29457, 32730, 39276, 43640, 49095, 52368, 58914, 65460, 78552, 87280, 88371, 98190, 117828, 130920, 147285, 157104, 176742, 196380, 235656, 261840, 265113, 294570, 353484, 392760, 441855, 471312, 530226, 589140, 706968, 785520, 883710, 1060452, 1178280, 1325565, 1413936, 1767420, 2120904, 2356560, 2651130, 3534840, 4241808, 5302260, 7069680, 10604520, 21209040]

約数ペア:

[(1, 21209040), (2, 10604520), (3, 7069680), (4, 5302260), (5, 4241808), (6, 3534840), (8, 2651130), (9, 2356560), (10, 2120904), (12, 1767420), (15, 1413936), (16, 1325565), (18, 1178280), (20, 1060452), (24, 883710), (27, 785520), (30, 706968), (36, 589140), (40, 530226), (45, 471312), (48, 441855), (54, 392760), (60, 353484), (72, 294570), (80, 265113), (81, 261840), (90, 235656), (108, 196380), (120, 176742), (135, 157104), (144, 147285), (162, 130920), (180, 117828), (216, 98190), (240, 88371), (243, 87280), (270, 78552), (324, 65460), (360, 58914), (405, 52368), (432, 49095), (486, 43640), (540, 39276), (648, 32730), (720, 29457), (810, 26184), (972, 21820), (1080, 19638), (1091, 19440), (1215, 17456), (1296, 16365), (1620, 13092), (1944, 10910), (2160, 9819), (2182, 9720), (2430, 8728), (3240, 6546), (3273, 6480), (3888, 5455), (4364, 4860)]