51581565

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 105370200

約数和(自身を除く): 53788635

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 149, 157, 245, 315, 441, 447, 471, 735, 745, 785, 1043, 1099, 1341, 1413, 2205, 2235, 2355, 3129, 3297, 5215, 5495, 6705, 7065, 7301, 7693, 9387, 9891, 15645, 16485, 21903, 23079, 23393, 36505, 38465, 46935, 49455, 65709, 69237, 70179, 109515, 115395, 116965, 163751, 210537, 328545, 346185, 350895, 491253, 818755, 1052685, 1146257, 1473759, 2456265, 3438771, 5731285, 7368795, 10316313, 17193855, 51581565]

約数ペア:

[(1, 51581565), (3, 17193855), (5, 10316313), (7, 7368795), (9, 5731285), (15, 3438771), (21, 2456265), (35, 1473759), (45, 1146257), (49, 1052685), (63, 818755), (105, 491253), (147, 350895), (149, 346185), (157, 328545), (245, 210537), (315, 163751), (441, 116965), (447, 115395), (471, 109515), (735, 70179), (745, 69237), (785, 65709), (1043, 49455), (1099, 46935), (1341, 38465), (1413, 36505), (2205, 23393), (2235, 23079), (2355, 21903), (3129, 16485), (3297, 15645), (5215, 9891), (5495, 9387), (6705, 7693), (7065, 7301)]