19703985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 19003215

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 41, 69, 105, 115, 123, 161, 199, 205, 287, 345, 483, 597, 615, 805, 861, 943, 995, 1393, 1435, 2415, 2829, 2985, 4179, 4305, 4577, 4715, 6601, 6965, 8159, 13731, 14145, 19803, 20895, 22885, 24477, 32039, 33005, 40795, 57113, 68655, 96117, 99015, 122385, 160195, 171339, 187657, 285565, 480585, 562971, 856695, 938285, 1313599, 2814855, 3940797, 6567995, 19703985]

約数ペア:

[(1, 19703985), (3, 6567995), (5, 3940797), (7, 2814855), (15, 1313599), (21, 938285), (23, 856695), (35, 562971), (41, 480585), (69, 285565), (105, 187657), (115, 171339), (123, 160195), (161, 122385), (199, 99015), (205, 96117), (287, 68655), (345, 57113), (483, 40795), (597, 33005), (615, 32039), (805, 24477), (861, 22885), (943, 20895), (995, 19803), (1393, 14145), (1435, 13731), (2415, 8159), (2829, 6965), (2985, 6601), (4179, 4715), (4305, 4577)]