21618900

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:200

約数の個数: 180

約数和(自身を含む): 74674908

約数和(自身を除く): 53056008

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 25, 27, 30, 34, 36, 45, 50, 51, 54, 60, 68, 75, 81, 85, 90, 100, 102, 108, 135, 150, 153, 157, 162, 170, 180, 204, 225, 255, 270, 300, 306, 314, 324, 340, 405, 425, 450, 459, 471, 510, 540, 612, 628, 675, 765, 785, 810, 850, 900, 918, 942, 1020, 1275, 1350, 1377, 1413, 1530, 1570, 1620, 1700, 1836, 1884, 2025, 2295, 2355, 2550, 2669, 2700, 2754, 2826, 3060, 3140, 3825, 3925, 4050, 4239, 4590, 4710, 5100, 5338, 5508, 5652, 6885, 7065, 7650, 7850, 8007, 8100, 8478, 9180, 9420, 10676, 11475, 11775, 12717, 13345, 13770, 14130, 15300, 15700, 16014, 16956, 21195, 22950, 23550, 24021, 25434, 26690, 27540, 28260, 32028, 34425, 35325, 40035, 42390, 45900, 47100, 48042, 50868, 53380, 63585, 66725, 68850, 70650, 72063, 80070, 84780, 96084, 105975, 120105, 127170, 133450, 137700, 141300, 144126, 160140, 200175, 211950, 216189, 240210, 254340, 266900, 288252, 317925, 360315, 400350, 423900, 432378, 480420, 600525, 635850, 720630, 800700, 864756, 1080945, 1201050, 1271700, 1441260, 1801575, 2161890, 2402100, 3603150, 4323780, 5404725, 7206300, 10809450, 21618900]

約数ペア:

[(1, 21618900), (2, 10809450), (3, 7206300), (4, 5404725), (5, 4323780), (6, 3603150), (9, 2402100), (10, 2161890), (12, 1801575), (15, 1441260), (17, 1271700), (18, 1201050), (20, 1080945), (25, 864756), (27, 800700), (30, 720630), (34, 635850), (36, 600525), (45, 480420), (50, 432378), (51, 423900), (54, 400350), (60, 360315), (68, 317925), (75, 288252), (81, 266900), (85, 254340), (90, 240210), (100, 216189), (102, 211950), (108, 200175), (135, 160140), (150, 144126), (153, 141300), (157, 137700), (162, 133450), (170, 127170), (180, 120105), (204, 105975), (225, 96084), (255, 84780), (270, 80070), (300, 72063), (306, 70650), (314, 68850), (324, 66725), (340, 63585), (405, 53380), (425, 50868), (450, 48042), (459, 47100), (471, 45900), (510, 42390), (540, 40035), (612, 35325), (628, 34425), (675, 32028), (765, 28260), (785, 27540), (810, 26690), (850, 25434), (900, 24021), (918, 23550), (942, 22950), (1020, 21195), (1275, 16956), (1350, 16014), (1377, 15700), (1413, 15300), (1530, 14130), (1570, 13770), (1620, 13345), (1700, 12717), (1836, 11775), (1884, 11475), (2025, 10676), (2295, 9420), (2355, 9180), (2550, 8478), (2669, 8100), (2700, 8007), (2754, 7850), (2826, 7650), (3060, 7065), (3140, 6885), (3825, 5652), (3925, 5508), (4050, 5338), (4239, 5100), (4590, 4710)]