21290147280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{115057}}^1$

素因数の和:115333

約数の個数: 120

約数和(自身を含む): 71778242952

約数和(自身を除く): 50488095672

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 257, 360, 514, 720, 771, 1028, 1285, 1542, 2056, 2313, 2570, 3084, 3855, 4112, 4626, 5140, 6168, 7710, 9252, 10280, 11565, 12336, 15420, 18504, 20560, 23130, 30840, 37008, 46260, 61680, 92520, 115057, 185040, 230114, 345171, 460228, 575285, 690342, 920456, 1035513, 1150570, 1380684, 1725855, 1840912, 2071026, 2301140, 2761368, 3451710, 4142052, 4602280, 5177565, 5522736, 6903420, 8284104, 9204560, 10355130, 13806840, 16568208, 20710260, 27613680, 29569649, 41420520, 59139298, 82841040, 88708947, 118278596, 147848245, 177417894, 236557192, 266126841, 295696490, 354835788, 443544735, 473114384, 532253682, 591392980, 709671576, 887089470, 1064507364, 1182785960, 1330634205, 1419343152, 1774178940, 2129014728, 2365571920, 2661268410, 3548357880, 4258029456, 5322536820, 7096715760, 10645073640, 21290147280]

約数ペア:

[(1, 21290147280), (2, 10645073640), (3, 7096715760), (4, 5322536820), (5, 4258029456), (6, 3548357880), (8, 2661268410), (9, 2365571920), (10, 2129014728), (12, 1774178940), (15, 1419343152), (16, 1330634205), (18, 1182785960), (20, 1064507364), (24, 887089470), (30, 709671576), (36, 591392980), (40, 532253682), (45, 473114384), (48, 443544735), (60, 354835788), (72, 295696490), (80, 266126841), (90, 236557192), (120, 177417894), (144, 147848245), (180, 118278596), (240, 88708947), (257, 82841040), (360, 59139298), (514, 41420520), (720, 29569649), (771, 27613680), (1028, 20710260), (1285, 16568208), (1542, 13806840), (2056, 10355130), (2313, 9204560), (2570, 8284104), (3084, 6903420), (3855, 5522736), (4112, 5177565), (4626, 4602280), (5140, 4142052), (6168, 3451710), (7710, 2761368), (9252, 2301140), (10280, 2071026), (11565, 1840912), (12336, 1725855), (15420, 1380684), (18504, 1150570), (20560, 1035513), (23130, 920456), (30840, 690342), (37008, 575285), (46260, 460228), (61680, 345171), (92520, 230114), (115057, 185040)]