21309400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:545

約数の個数: 96

約数和(自身を含む): 58567680

約数和(自身を除く): 37258280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 100, 124, 140, 155, 175, 200, 217, 248, 280, 310, 350, 434, 491, 620, 700, 775, 868, 982, 1085, 1240, 1400, 1550, 1736, 1964, 2170, 2455, 3100, 3437, 3928, 4340, 4910, 5425, 6200, 6874, 8680, 9820, 10850, 12275, 13748, 15221, 17185, 19640, 21700, 24550, 27496, 30442, 34370, 43400, 49100, 60884, 68740, 76105, 85925, 98200, 106547, 121768, 137480, 152210, 171850, 213094, 304420, 343700, 380525, 426188, 532735, 608840, 687400, 761050, 852376, 1065470, 1522100, 2130940, 2663675, 3044200, 4261880, 5327350, 10654700, 21309400]

約数ペア:

[(1, 21309400), (2, 10654700), (4, 5327350), (5, 4261880), (7, 3044200), (8, 2663675), (10, 2130940), (14, 1522100), (20, 1065470), (25, 852376), (28, 761050), (31, 687400), (35, 608840), (40, 532735), (50, 426188), (56, 380525), (62, 343700), (70, 304420), (100, 213094), (124, 171850), (140, 152210), (155, 137480), (175, 121768), (200, 106547), (217, 98200), (248, 85925), (280, 76105), (310, 68740), (350, 60884), (434, 49100), (491, 43400), (620, 34370), (700, 30442), (775, 27496), (868, 24550), (982, 21700), (1085, 19640), (1240, 17185), (1400, 15221), (1550, 13748), (1736, 12275), (1964, 10850), (2170, 9820), (2455, 8680), (3100, 6874), (3437, 6200), (3928, 5425), (4340, 4910)]