20899800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{683}}^1$

素因数の和:722

約数の個数: 144

約数和(自身を含む): 74426040

約数和(自身を除く): 53526240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 25, 30, 34, 36, 40, 45, 50, 51, 60, 68, 72, 75, 85, 90, 100, 102, 120, 136, 150, 153, 170, 180, 200, 204, 225, 255, 300, 306, 340, 360, 408, 425, 450, 510, 600, 612, 680, 683, 765, 850, 900, 1020, 1224, 1275, 1366, 1530, 1700, 1800, 2040, 2049, 2550, 2732, 3060, 3400, 3415, 3825, 4098, 5100, 5464, 6120, 6147, 6830, 7650, 8196, 10200, 10245, 11611, 12294, 13660, 15300, 16392, 17075, 20490, 23222, 24588, 27320, 30600, 30735, 34150, 34833, 40980, 46444, 49176, 51225, 58055, 61470, 68300, 69666, 81960, 92888, 102450, 104499, 116110, 122940, 136600, 139332, 153675, 174165, 204900, 208998, 232220, 245880, 278664, 290275, 307350, 348330, 409800, 417996, 464440, 522495, 580550, 614700, 696660, 835992, 870825, 1044990, 1161100, 1229400, 1393320, 1741650, 2089980, 2322200, 2612475, 3483300, 4179960, 5224950, 6966600, 10449900, 20899800]

約数ペア:

[(1, 20899800), (2, 10449900), (3, 6966600), (4, 5224950), (5, 4179960), (6, 3483300), (8, 2612475), (9, 2322200), (10, 2089980), (12, 1741650), (15, 1393320), (17, 1229400), (18, 1161100), (20, 1044990), (24, 870825), (25, 835992), (30, 696660), (34, 614700), (36, 580550), (40, 522495), (45, 464440), (50, 417996), (51, 409800), (60, 348330), (68, 307350), (72, 290275), (75, 278664), (85, 245880), (90, 232220), (100, 208998), (102, 204900), (120, 174165), (136, 153675), (150, 139332), (153, 136600), (170, 122940), (180, 116110), (200, 104499), (204, 102450), (225, 92888), (255, 81960), (300, 69666), (306, 68300), (340, 61470), (360, 58055), (408, 51225), (425, 49176), (450, 46444), (510, 40980), (600, 34833), (612, 34150), (680, 30735), (683, 30600), (765, 27320), (850, 24588), (900, 23222), (1020, 20490), (1224, 17075), (1275, 16392), (1366, 15300), (1530, 13660), (1700, 12294), (1800, 11611), (2040, 10245), (2049, 10200), (2550, 8196), (2732, 7650), (3060, 6830), (3400, 6147), (3415, 6120), (3825, 5464), (4098, 5100)]