20149120

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1657}}^1$

素因数の和:1695

約数の個数: 64

約数和(自身を含む): 50734800

約数和(自身を除く): 30585680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 1657, 2432, 3040, 3314, 6080, 6628, 8285, 12160, 13256, 16570, 26512, 31483, 33140, 53024, 62966, 66280, 106048, 125932, 132560, 157415, 212096, 251864, 265120, 314830, 503728, 530240, 629660, 1007456, 1060480, 1259320, 2014912, 2518640, 4029824, 5037280, 10074560, 20149120]

約数ペア:

[(1, 20149120), (2, 10074560), (4, 5037280), (5, 4029824), (8, 2518640), (10, 2014912), (16, 1259320), (19, 1060480), (20, 1007456), (32, 629660), (38, 530240), (40, 503728), (64, 314830), (76, 265120), (80, 251864), (95, 212096), (128, 157415), (152, 132560), (160, 125932), (190, 106048), (304, 66280), (320, 62966), (380, 53024), (608, 33140), (640, 31483), (760, 26512), (1216, 16570), (1520, 13256), (1657, 12160), (2432, 8285), (3040, 6628), (3314, 6080)]