20525040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{983}}^1$

素因数の和:1031

約数の個数: 120

約数和(自身を含む): 71379360

約数和(自身を除く): 50854320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 116, 120, 144, 145, 174, 180, 232, 240, 261, 290, 348, 360, 435, 464, 522, 580, 696, 720, 870, 983, 1044, 1160, 1305, 1392, 1740, 1966, 2088, 2320, 2610, 2949, 3480, 3932, 4176, 4915, 5220, 5898, 6960, 7864, 8847, 9830, 10440, 11796, 14745, 15728, 17694, 19660, 20880, 23592, 28507, 29490, 35388, 39320, 44235, 47184, 57014, 58980, 70776, 78640, 85521, 88470, 114028, 117960, 141552, 142535, 171042, 176940, 228056, 235920, 256563, 285070, 342084, 353880, 427605, 456112, 513126, 570140, 684168, 707760, 855210, 1026252, 1140280, 1282815, 1368336, 1710420, 2052504, 2280560, 2565630, 3420840, 4105008, 5131260, 6841680, 10262520, 20525040]

約数ペア:

[(1, 20525040), (2, 10262520), (3, 6841680), (4, 5131260), (5, 4105008), (6, 3420840), (8, 2565630), (9, 2280560), (10, 2052504), (12, 1710420), (15, 1368336), (16, 1282815), (18, 1140280), (20, 1026252), (24, 855210), (29, 707760), (30, 684168), (36, 570140), (40, 513126), (45, 456112), (48, 427605), (58, 353880), (60, 342084), (72, 285070), (80, 256563), (87, 235920), (90, 228056), (116, 176940), (120, 171042), (144, 142535), (145, 141552), (174, 117960), (180, 114028), (232, 88470), (240, 85521), (261, 78640), (290, 70776), (348, 58980), (360, 57014), (435, 47184), (464, 44235), (522, 39320), (580, 35388), (696, 29490), (720, 28507), (870, 23592), (983, 20880), (1044, 19660), (1160, 17694), (1305, 15728), (1392, 14745), (1740, 11796), (1966, 10440), (2088, 9830), (2320, 8847), (2610, 7864), (2949, 6960), (3480, 5898), (3932, 5220), (4176, 4915)]