21009960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3433}}^1$

素因数の和:3467

約数の個数: 96

約数和(自身を含む): 72320040

約数和(自身を除く): 51310080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 204, 255, 306, 340, 360, 408, 510, 612, 680, 765, 1020, 1224, 1530, 2040, 3060, 3433, 6120, 6866, 10299, 13732, 17165, 20598, 27464, 30897, 34330, 41196, 51495, 58361, 61794, 68660, 82392, 102990, 116722, 123588, 137320, 154485, 175083, 205980, 233444, 247176, 291805, 308970, 350166, 411960, 466888, 525249, 583610, 617940, 700332, 875415, 1050498, 1167220, 1235880, 1400664, 1750830, 2100996, 2334440, 2626245, 3501660, 4201992, 5252490, 7003320, 10504980, 21009960]

約数ペア:

[(1, 21009960), (2, 10504980), (3, 7003320), (4, 5252490), (5, 4201992), (6, 3501660), (8, 2626245), (9, 2334440), (10, 2100996), (12, 1750830), (15, 1400664), (17, 1235880), (18, 1167220), (20, 1050498), (24, 875415), (30, 700332), (34, 617940), (36, 583610), (40, 525249), (45, 466888), (51, 411960), (60, 350166), (68, 308970), (72, 291805), (85, 247176), (90, 233444), (102, 205980), (120, 175083), (136, 154485), (153, 137320), (170, 123588), (180, 116722), (204, 102990), (255, 82392), (306, 68660), (340, 61794), (360, 58361), (408, 51495), (510, 41196), (612, 34330), (680, 30897), (765, 27464), (1020, 20598), (1224, 17165), (1530, 13732), (2040, 10299), (3060, 6866), (3433, 6120)]