20003010040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{894589}}^1$

素因数の和:894656

約数の個数: 64

約数和(自身を含む): 49596069600

約数和(自身を除く): 29593059560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 1118, 1720, 2236, 2795, 4472, 5590, 11180, 22360, 894589, 1789178, 3578356, 4472945, 7156712, 8945890, 11629657, 17891780, 23259314, 35783560, 38467327, 46518628, 58148285, 76934654, 93037256, 116296570, 153869308, 192336635, 232593140, 307738616, 384673270, 465186280, 500075251, 769346540, 1000150502, 1538693080, 2000301004, 2500376255, 4000602008, 5000752510, 10001505020, 20003010040]

約数ペア:

[(1, 20003010040), (2, 10001505020), (4, 5000752510), (5, 4000602008), (8, 2500376255), (10, 2000301004), (13, 1538693080), (20, 1000150502), (26, 769346540), (40, 500075251), (43, 465186280), (52, 384673270), (65, 307738616), (86, 232593140), (104, 192336635), (130, 153869308), (172, 116296570), (215, 93037256), (260, 76934654), (344, 58148285), (430, 46518628), (520, 38467327), (559, 35783560), (860, 23259314), (1118, 17891780), (1720, 11629657), (2236, 8945890), (2795, 7156712), (4472, 4472945), (5590, 3578356), (11180, 1789178), (22360, 894589)]