21720300

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10343}}^1$

素因数の和:10367

約数の個数: 72

約数和(自身を含む): 71828736

約数和(自身を除く): 50108436

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10343, 20686, 31029, 41372, 51715, 62058, 72401, 103430, 124116, 144802, 155145, 206860, 217203, 258575, 289604, 310290, 362005, 434406, 517150, 620580, 724010, 775725, 868812, 1034300, 1086015, 1448020, 1551450, 1810025, 2172030, 3102900, 3620050, 4344060, 5430075, 7240100, 10860150, 21720300]

約数ペア:

[(1, 21720300), (2, 10860150), (3, 7240100), (4, 5430075), (5, 4344060), (6, 3620050), (7, 3102900), (10, 2172030), (12, 1810025), (14, 1551450), (15, 1448020), (20, 1086015), (21, 1034300), (25, 868812), (28, 775725), (30, 724010), (35, 620580), (42, 517150), (50, 434406), (60, 362005), (70, 310290), (75, 289604), (84, 258575), (100, 217203), (105, 206860), (140, 155145), (150, 144802), (175, 124116), (210, 103430), (300, 72401), (350, 62058), (420, 51715), (525, 41372), (700, 31029), (1050, 20686), (2100, 10343)]