18949980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{45119}}^1$

素因数の和:45138

約数の個数: 48

約数和(自身を含む): 60641280

約数和(自身を除く): 41691300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 45119, 90238, 135357, 180476, 225595, 270714, 315833, 451190, 541428, 631666, 676785, 902380, 947499, 1263332, 1353570, 1579165, 1894998, 2707140, 3158330, 3789996, 4737495, 6316660, 9474990, 18949980]

約数ペア:

[(1, 18949980), (2, 9474990), (3, 6316660), (4, 4737495), (5, 3789996), (6, 3158330), (7, 2707140), (10, 1894998), (12, 1579165), (14, 1353570), (15, 1263332), (20, 947499), (21, 902380), (28, 676785), (30, 631666), (35, 541428), (42, 451190), (60, 315833), (70, 270714), (84, 225595), (105, 180476), (140, 135357), (210, 90238), (420, 45119)]