30820280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{379}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 73872000

約数和(自身を除く): 43051720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 107, 152, 190, 214, 379, 380, 428, 535, 758, 760, 856, 1070, 1516, 1895, 2033, 2140, 3032, 3790, 4066, 4280, 7201, 7580, 8132, 10165, 14402, 15160, 16264, 20330, 28804, 36005, 40553, 40660, 57608, 72010, 81106, 81320, 144020, 162212, 202765, 288040, 324424, 405530, 770507, 811060, 1541014, 1622120, 3082028, 3852535, 6164056, 7705070, 15410140, 30820280]

約数ペア:

[(1, 30820280), (2, 15410140), (4, 7705070), (5, 6164056), (8, 3852535), (10, 3082028), (19, 1622120), (20, 1541014), (38, 811060), (40, 770507), (76, 405530), (95, 324424), (107, 288040), (152, 202765), (190, 162212), (214, 144020), (379, 81320), (380, 81106), (428, 72010), (535, 57608), (758, 40660), (760, 40553), (856, 36005), (1070, 28804), (1516, 20330), (1895, 16264), (2033, 15160), (2140, 14402), (3032, 10165), (3790, 8132), (4066, 7580), (4280, 7201)]