21305700

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:643

約数の個数: 144

約数和(自身を含む): 73884160

約数和(自身を除く): 52578460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 25, 26, 27, 30, 36, 39, 45, 50, 52, 54, 60, 65, 75, 78, 90, 100, 108, 117, 130, 135, 150, 156, 180, 195, 225, 234, 260, 270, 300, 325, 351, 390, 450, 468, 540, 585, 607, 650, 675, 702, 780, 900, 975, 1170, 1214, 1300, 1350, 1404, 1755, 1821, 1950, 2340, 2428, 2700, 2925, 3035, 3510, 3642, 3900, 5463, 5850, 6070, 7020, 7284, 7891, 8775, 9105, 10926, 11700, 12140, 15175, 15782, 16389, 17550, 18210, 21852, 23673, 27315, 30350, 31564, 32778, 35100, 36420, 39455, 45525, 47346, 54630, 60700, 65556, 71019, 78910, 81945, 91050, 94692, 109260, 118365, 136575, 142038, 157820, 163890, 182100, 197275, 213057, 236730, 273150, 284076, 327780, 355095, 394550, 409725, 426114, 473460, 546300, 591825, 710190, 789100, 819450, 852228, 1065285, 1183650, 1420380, 1638900, 1775475, 2130570, 2367300, 3550950, 4261140, 5326425, 7101900, 10652850, 21305700]

約数ペア:

[(1, 21305700), (2, 10652850), (3, 7101900), (4, 5326425), (5, 4261140), (6, 3550950), (9, 2367300), (10, 2130570), (12, 1775475), (13, 1638900), (15, 1420380), (18, 1183650), (20, 1065285), (25, 852228), (26, 819450), (27, 789100), (30, 710190), (36, 591825), (39, 546300), (45, 473460), (50, 426114), (52, 409725), (54, 394550), (60, 355095), (65, 327780), (75, 284076), (78, 273150), (90, 236730), (100, 213057), (108, 197275), (117, 182100), (130, 163890), (135, 157820), (150, 142038), (156, 136575), (180, 118365), (195, 109260), (225, 94692), (234, 91050), (260, 81945), (270, 78910), (300, 71019), (325, 65556), (351, 60700), (390, 54630), (450, 47346), (468, 45525), (540, 39455), (585, 36420), (607, 35100), (650, 32778), (675, 31564), (702, 30350), (780, 27315), (900, 23673), (975, 21852), (1170, 18210), (1214, 17550), (1300, 16389), (1350, 15782), (1404, 15175), (1755, 12140), (1821, 11700), (1950, 10926), (2340, 9105), (2428, 8775), (2700, 7891), (2925, 7284), (3035, 7020), (3510, 6070), (3642, 5850), (3900, 5463)]