21000252700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{2239}}^1\times {\mathrm{13399}}^1$

素因数の和:15659

約数の個数: 72

約数和(自身を含む): 52107776000

約数和(自身を除く): 31107523300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 2239, 4478, 8956, 11195, 13399, 15673, 22390, 26798, 31346, 44780, 53596, 55975, 62692, 66995, 78365, 93793, 111950, 133990, 156730, 187586, 223900, 267980, 313460, 334975, 375172, 391825, 468965, 669950, 783650, 937930, 1339900, 1567300, 1875860, 2344825, 4689650, 9379300, 30000361, 60000722, 120001444, 150001805, 210002527, 300003610, 420005054, 600007220, 750009025, 840010108, 1050012635, 1500018050, 2100025270, 3000036100, 4200050540, 5250063175, 10500126350, 21000252700]

約数ペア:

[(1, 21000252700), (2, 10500126350), (4, 5250063175), (5, 4200050540), (7, 3000036100), (10, 2100025270), (14, 1500018050), (20, 1050012635), (25, 840010108), (28, 750009025), (35, 600007220), (50, 420005054), (70, 300003610), (100, 210002527), (140, 150001805), (175, 120001444), (350, 60000722), (700, 30000361), (2239, 9379300), (4478, 4689650), (8956, 2344825), (11195, 1875860), (13399, 1567300), (15673, 1339900), (22390, 937930), (26798, 783650), (31346, 669950), (44780, 468965), (53596, 391825), (55975, 375172), (62692, 334975), (66995, 313460), (78365, 267980), (93793, 223900), (111950, 187586), (133990, 156730)]