19973655

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{599}}^1$

素因数の和:645

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 20346345

約数列:

[1, 3, 5, 9, 13, 15, 19, 27, 39, 45, 57, 65, 95, 117, 135, 171, 195, 247, 285, 351, 513, 585, 599, 741, 855, 1235, 1755, 1797, 2223, 2565, 2995, 3705, 5391, 6669, 7787, 8985, 11115, 11381, 16173, 23361, 26955, 33345, 34143, 38935, 56905, 70083, 80865, 102429, 116805, 147953, 170715, 210249, 307287, 350415, 443859, 512145, 739765, 1051245, 1331577, 1536435, 2219295, 3994731, 6657885, 19973655]

約数ペア:

[(1, 19973655), (3, 6657885), (5, 3994731), (9, 2219295), (13, 1536435), (15, 1331577), (19, 1051245), (27, 739765), (39, 512145), (45, 443859), (57, 350415), (65, 307287), (95, 210249), (117, 170715), (135, 147953), (171, 116805), (195, 102429), (247, 80865), (285, 70083), (351, 56905), (513, 38935), (585, 34143), (599, 33345), (741, 26955), (855, 23361), (1235, 16173), (1755, 11381), (1797, 11115), (2223, 8985), (2565, 7787), (2995, 6669), (3705, 5391)]