21360840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:351

約数の個数: 128

約数和(自身を含む): 69932160

約数和(自身を除く): 48571320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 37, 40, 51, 60, 68, 74, 85, 102, 111, 120, 136, 148, 170, 185, 204, 222, 255, 283, 296, 340, 370, 408, 444, 510, 555, 566, 629, 680, 740, 849, 888, 1020, 1110, 1132, 1258, 1415, 1480, 1698, 1887, 2040, 2220, 2264, 2516, 2830, 3145, 3396, 3774, 4245, 4440, 4811, 5032, 5660, 6290, 6792, 7548, 8490, 9435, 9622, 10471, 11320, 12580, 14433, 15096, 16980, 18870, 19244, 20942, 24055, 25160, 28866, 31413, 33960, 37740, 38488, 41884, 48110, 52355, 57732, 62826, 72165, 75480, 83768, 96220, 104710, 115464, 125652, 144330, 157065, 178007, 192440, 209420, 251304, 288660, 314130, 356014, 418840, 534021, 577320, 628260, 712028, 890035, 1068042, 1256520, 1424056, 1780070, 2136084, 2670105, 3560140, 4272168, 5340210, 7120280, 10680420, 21360840]

約数ペア:

[(1, 21360840), (2, 10680420), (3, 7120280), (4, 5340210), (5, 4272168), (6, 3560140), (8, 2670105), (10, 2136084), (12, 1780070), (15, 1424056), (17, 1256520), (20, 1068042), (24, 890035), (30, 712028), (34, 628260), (37, 577320), (40, 534021), (51, 418840), (60, 356014), (68, 314130), (74, 288660), (85, 251304), (102, 209420), (111, 192440), (120, 178007), (136, 157065), (148, 144330), (170, 125652), (185, 115464), (204, 104710), (222, 96220), (255, 83768), (283, 75480), (296, 72165), (340, 62826), (370, 57732), (408, 52355), (444, 48110), (510, 41884), (555, 38488), (566, 37740), (629, 33960), (680, 31413), (740, 28866), (849, 25160), (888, 24055), (1020, 20942), (1110, 19244), (1132, 18870), (1258, 16980), (1415, 15096), (1480, 14433), (1698, 12580), (1887, 11320), (2040, 10471), (2220, 9622), (2264, 9435), (2516, 8490), (2830, 7548), (3145, 6792), (3396, 6290), (3774, 5660), (4245, 5032), (4440, 4811)]