21708640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:264

約数の個数: 96

約数和(自身を含む): 55732320

約数和(自身を除く): 34023680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 37, 38, 40, 74, 76, 80, 95, 148, 152, 160, 185, 190, 193, 296, 304, 370, 380, 386, 592, 608, 703, 740, 760, 772, 965, 1184, 1406, 1480, 1520, 1544, 1930, 2812, 2960, 3040, 3088, 3515, 3667, 3860, 5624, 5920, 6176, 7030, 7141, 7334, 7720, 11248, 14060, 14282, 14668, 15440, 18335, 22496, 28120, 28564, 29336, 30880, 35705, 36670, 56240, 57128, 58672, 71410, 73340, 112480, 114256, 117344, 135679, 142820, 146680, 228512, 271358, 285640, 293360, 542716, 571280, 586720, 678395, 1085432, 1142560, 1356790, 2170864, 2713580, 4341728, 5427160, 10854320, 21708640]

約数ペア:

[(1, 21708640), (2, 10854320), (4, 5427160), (5, 4341728), (8, 2713580), (10, 2170864), (16, 1356790), (19, 1142560), (20, 1085432), (32, 678395), (37, 586720), (38, 571280), (40, 542716), (74, 293360), (76, 285640), (80, 271358), (95, 228512), (148, 146680), (152, 142820), (160, 135679), (185, 117344), (190, 114256), (193, 112480), (296, 73340), (304, 71410), (370, 58672), (380, 57128), (386, 56240), (592, 36670), (608, 35705), (703, 30880), (740, 29336), (760, 28564), (772, 28120), (965, 22496), (1184, 18335), (1406, 15440), (1480, 14668), (1520, 14282), (1544, 14060), (1930, 11248), (2812, 7720), (2960, 7334), (3040, 7141), (3088, 7030), (3515, 6176), (3667, 5920), (3860, 5624)]