161187640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1619}}^1$

素因数の和:1780

約数の個数: 64

約数和(自身を含む): 384912000

約数和(自身を除く): 223724360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 131, 152, 190, 262, 380, 524, 655, 760, 1048, 1310, 1619, 2489, 2620, 3238, 4978, 5240, 6476, 8095, 9956, 12445, 12952, 16190, 19912, 24890, 30761, 32380, 49780, 61522, 64760, 99560, 123044, 153805, 212089, 246088, 307610, 424178, 615220, 848356, 1060445, 1230440, 1696712, 2120890, 4029691, 4241780, 8059382, 8483560, 16118764, 20148455, 32237528, 40296910, 80593820, 161187640]

約数ペア:

[(1, 161187640), (2, 80593820), (4, 40296910), (5, 32237528), (8, 20148455), (10, 16118764), (19, 8483560), (20, 8059382), (38, 4241780), (40, 4029691), (76, 2120890), (95, 1696712), (131, 1230440), (152, 1060445), (190, 848356), (262, 615220), (380, 424178), (524, 307610), (655, 246088), (760, 212089), (1048, 153805), (1310, 123044), (1619, 99560), (2489, 64760), (2620, 61522), (3238, 49780), (4978, 32380), (5240, 30761), (6476, 24890), (8095, 19912), (9956, 16190), (12445, 12952)]