21760340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:297

約数の個数: 96

約数和(自身を含む): 56899584

約数和(自身を除く): 35139244

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 41, 68, 70, 82, 85, 119, 140, 164, 170, 205, 223, 238, 287, 340, 410, 446, 476, 574, 595, 697, 820, 892, 1115, 1148, 1190, 1394, 1435, 1561, 2230, 2380, 2788, 2870, 3122, 3485, 3791, 4460, 4879, 5740, 6244, 6970, 7582, 7805, 9143, 9758, 13940, 15164, 15610, 18286, 18955, 19516, 24395, 26537, 31220, 36572, 37910, 45715, 48790, 53074, 64001, 75820, 91430, 97580, 106148, 128002, 132685, 155431, 182860, 256004, 265370, 310862, 320005, 530740, 621724, 640010, 777155, 1088017, 1280020, 1554310, 2176034, 3108620, 4352068, 5440085, 10880170, 21760340]

約数ペア:

[(1, 21760340), (2, 10880170), (4, 5440085), (5, 4352068), (7, 3108620), (10, 2176034), (14, 1554310), (17, 1280020), (20, 1088017), (28, 777155), (34, 640010), (35, 621724), (41, 530740), (68, 320005), (70, 310862), (82, 265370), (85, 256004), (119, 182860), (140, 155431), (164, 132685), (170, 128002), (205, 106148), (223, 97580), (238, 91430), (287, 75820), (340, 64001), (410, 53074), (446, 48790), (476, 45715), (574, 37910), (595, 36572), (697, 31220), (820, 26537), (892, 24395), (1115, 19516), (1148, 18955), (1190, 18286), (1394, 15610), (1435, 15164), (1561, 13940), (2230, 9758), (2380, 9143), (2788, 7805), (2870, 7582), (3122, 6970), (3485, 6244), (3791, 5740), (4460, 4879)]