81445370

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 158561280

約数和(自身を除く): 77115910

約数列:

[1, 2, 5, 10, 31, 59, 61, 62, 73, 118, 122, 146, 155, 295, 305, 310, 365, 590, 610, 730, 1829, 1891, 2263, 3599, 3658, 3782, 4307, 4453, 4526, 7198, 8614, 8906, 9145, 9455, 11315, 17995, 18290, 18910, 21535, 22265, 22630, 35990, 43070, 44530, 111569, 133517, 138043, 223138, 262727, 267034, 276086, 525454, 557845, 667585, 690215, 1115690, 1313635, 1335170, 1380430, 2627270, 8144537, 16289074, 40722685, 81445370]

約数ペア:

[(1, 81445370), (2, 40722685), (5, 16289074), (10, 8144537), (31, 2627270), (59, 1380430), (61, 1335170), (62, 1313635), (73, 1115690), (118, 690215), (122, 667585), (146, 557845), (155, 525454), (295, 276086), (305, 267034), (310, 262727), (365, 223138), (590, 138043), (610, 133517), (730, 111569), (1829, 44530), (1891, 43070), (2263, 35990), (3599, 22630), (3658, 22265), (3782, 21535), (4307, 18910), (4453, 18290), (4526, 17995), (7198, 11315), (8614, 9455), (8906, 9145)]