21655800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:302

約数の個数: 144

約数和(自身を含む): 74426040

約数和(自身を除く): 52770240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 53, 60, 72, 75, 90, 100, 106, 120, 150, 159, 180, 200, 212, 225, 227, 265, 300, 318, 360, 424, 450, 454, 477, 530, 600, 636, 681, 795, 900, 908, 954, 1060, 1135, 1272, 1325, 1362, 1590, 1800, 1816, 1908, 2043, 2120, 2270, 2385, 2650, 2724, 3180, 3405, 3816, 3975, 4086, 4540, 4770, 5300, 5448, 5675, 6360, 6810, 7950, 8172, 9080, 9540, 10215, 10600, 11350, 11925, 12031, 13620, 15900, 16344, 17025, 19080, 20430, 22700, 23850, 24062, 27240, 31800, 34050, 36093, 40860, 45400, 47700, 48124, 51075, 60155, 68100, 72186, 81720, 95400, 96248, 102150, 108279, 120310, 136200, 144372, 180465, 204300, 216558, 240620, 288744, 300775, 360930, 408600, 433116, 481240, 541395, 601550, 721860, 866232, 902325, 1082790, 1203100, 1443720, 1804650, 2165580, 2406200, 2706975, 3609300, 4331160, 5413950, 7218600, 10827900, 21655800]

約数ペア:

[(1, 21655800), (2, 10827900), (3, 7218600), (4, 5413950), (5, 4331160), (6, 3609300), (8, 2706975), (9, 2406200), (10, 2165580), (12, 1804650), (15, 1443720), (18, 1203100), (20, 1082790), (24, 902325), (25, 866232), (30, 721860), (36, 601550), (40, 541395), (45, 481240), (50, 433116), (53, 408600), (60, 360930), (72, 300775), (75, 288744), (90, 240620), (100, 216558), (106, 204300), (120, 180465), (150, 144372), (159, 136200), (180, 120310), (200, 108279), (212, 102150), (225, 96248), (227, 95400), (265, 81720), (300, 72186), (318, 68100), (360, 60155), (424, 51075), (450, 48124), (454, 47700), (477, 45400), (530, 40860), (600, 36093), (636, 34050), (681, 31800), (795, 27240), (900, 24062), (908, 23850), (954, 22700), (1060, 20430), (1135, 19080), (1272, 17025), (1325, 16344), (1362, 15900), (1590, 13620), (1800, 12031), (1816, 11925), (1908, 11350), (2043, 10600), (2120, 10215), (2270, 9540), (2385, 9080), (2650, 8172), (2724, 7950), (3180, 6810), (3405, 6360), (3816, 5675), (3975, 5448), (4086, 5300), (4540, 4770)]