21485580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1$

素因数の和:479

約数の個数: 96

約数和(自身を含む): 64834560

約数和(自身を除く): 43348980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 47, 57, 60, 76, 94, 95, 114, 141, 188, 190, 228, 235, 282, 285, 380, 401, 470, 564, 570, 705, 802, 893, 940, 1140, 1203, 1410, 1604, 1786, 2005, 2406, 2679, 2820, 3572, 4010, 4465, 4812, 5358, 6015, 7619, 8020, 8930, 10716, 12030, 13395, 15238, 17860, 18847, 22857, 24060, 26790, 30476, 37694, 38095, 45714, 53580, 56541, 75388, 76190, 91428, 94235, 113082, 114285, 152380, 188470, 226164, 228570, 282705, 358093, 376940, 457140, 565410, 716186, 1074279, 1130820, 1432372, 1790465, 2148558, 3580930, 4297116, 5371395, 7161860, 10742790, 21485580]

約数ペア:

[(1, 21485580), (2, 10742790), (3, 7161860), (4, 5371395), (5, 4297116), (6, 3580930), (10, 2148558), (12, 1790465), (15, 1432372), (19, 1130820), (20, 1074279), (30, 716186), (38, 565410), (47, 457140), (57, 376940), (60, 358093), (76, 282705), (94, 228570), (95, 226164), (114, 188470), (141, 152380), (188, 114285), (190, 113082), (228, 94235), (235, 91428), (282, 76190), (285, 75388), (380, 56541), (401, 53580), (470, 45714), (564, 38095), (570, 37694), (705, 30476), (802, 26790), (893, 24060), (940, 22857), (1140, 18847), (1203, 17860), (1410, 15238), (1604, 13395), (1786, 12030), (2005, 10716), (2406, 8930), (2679, 8020), (2820, 7619), (3572, 6015), (4010, 5358), (4465, 4812)]