21503680

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:218

約数の個数: 112

約数和(自身を含む): 57607200

約数和(自身を除く): 36103520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 41, 44, 55, 64, 80, 82, 88, 110, 149, 160, 164, 176, 205, 220, 298, 320, 328, 352, 410, 440, 451, 596, 656, 704, 745, 820, 880, 902, 1192, 1312, 1490, 1639, 1640, 1760, 1804, 2255, 2384, 2624, 2980, 3278, 3280, 3520, 3608, 4510, 4768, 5960, 6109, 6556, 6560, 7216, 8195, 9020, 9536, 11920, 12218, 13112, 13120, 14432, 16390, 18040, 23840, 24436, 26224, 28864, 30545, 32780, 36080, 47680, 48872, 52448, 61090, 65560, 67199, 72160, 97744, 104896, 122180, 131120, 134398, 144320, 195488, 244360, 262240, 268796, 335995, 390976, 488720, 524480, 537592, 671990, 977440, 1075184, 1343980, 1954880, 2150368, 2687960, 4300736, 5375920, 10751840, 21503680]

約数ペア:

[(1, 21503680), (2, 10751840), (4, 5375920), (5, 4300736), (8, 2687960), (10, 2150368), (11, 1954880), (16, 1343980), (20, 1075184), (22, 977440), (32, 671990), (40, 537592), (41, 524480), (44, 488720), (55, 390976), (64, 335995), (80, 268796), (82, 262240), (88, 244360), (110, 195488), (149, 144320), (160, 134398), (164, 131120), (176, 122180), (205, 104896), (220, 97744), (298, 72160), (320, 67199), (328, 65560), (352, 61090), (410, 52448), (440, 48872), (451, 47680), (596, 36080), (656, 32780), (704, 30545), (745, 28864), (820, 26224), (880, 24436), (902, 23840), (1192, 18040), (1312, 16390), (1490, 14432), (1639, 13120), (1640, 13112), (1760, 12218), (1804, 11920), (2255, 9536), (2384, 9020), (2624, 8195), (2980, 7216), (3278, 6560), (3280, 6556), (3520, 6109), (3608, 5960), (4510, 4768)]