21580860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51383}}^1$

素因数の和:51402

約数の個数: 48

約数和(自身を含む): 69060096

約数和(自身を除く): 47479236

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, 51383, 102766, 154149, 205532, 256915, 308298, 359681, 513830, 616596, 719362, 770745, 1027660, 1079043, 1438724, 1541490, 1798405, 2158086, 3082980, 3596810, 4316172, 5395215, 7193620, 10790430, 21580860]

約数ペア:

[(1, 21580860), (2, 10790430), (3, 7193620), (4, 5395215), (5, 4316172), (6, 3596810), (7, 3082980), (10, 2158086), (12, 1798405), (14, 1541490), (15, 1438724), (20, 1079043), (21, 1027660), (28, 770745), (30, 719362), (35, 616596), (42, 513830), (60, 359681), (70, 308298), (84, 256915), (105, 205532), (140, 154149), (210, 102766), (420, 51383)]