61789980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{21017}}^1$

素因数の和:21043

約数の個数: 72

約数和(自身を含む): 201268368

約数和(自身を除く): 139478388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 21017, 42034, 63051, 84068, 105085, 126102, 147119, 210170, 252204, 294238, 315255, 420340, 441357, 588476, 630510, 735595, 882714, 1029833, 1261020, 1471190, 1765428, 2059666, 2206785, 2942380, 3089499, 4119332, 4413570, 5149165, 6178998, 8827140, 10298330, 12357996, 15447495, 20596660, 30894990, 61789980]

約数ペア:

[(1, 61789980), (2, 30894990), (3, 20596660), (4, 15447495), (5, 12357996), (6, 10298330), (7, 8827140), (10, 6178998), (12, 5149165), (14, 4413570), (15, 4119332), (20, 3089499), (21, 2942380), (28, 2206785), (30, 2059666), (35, 1765428), (42, 1471190), (49, 1261020), (60, 1029833), (70, 882714), (84, 735595), (98, 630510), (105, 588476), (140, 441357), (147, 420340), (196, 315255), (210, 294238), (245, 252204), (294, 210170), (420, 147119), (490, 126102), (588, 105085), (735, 84068), (980, 63051), (1470, 42034), (2940, 21017)]