81187760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1723}}^1$

素因数の和:1786

約数の個数: 80

約数和(自身を含む): 205224960

約数和(自身を除く): 124037200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 496, 589, 620, 760, 1178, 1240, 1520, 1723, 2356, 2480, 2945, 3446, 4712, 5890, 6892, 8615, 9424, 11780, 13784, 17230, 23560, 27568, 32737, 34460, 47120, 53413, 65474, 68920, 106826, 130948, 137840, 163685, 213652, 261896, 267065, 327370, 427304, 523792, 534130, 654740, 854608, 1014847, 1068260, 1309480, 2029694, 2136520, 2618960, 4059388, 4273040, 5074235, 8118776, 10148470, 16237552, 20296940, 40593880, 81187760]

約数ペア:

[(1, 81187760), (2, 40593880), (4, 20296940), (5, 16237552), (8, 10148470), (10, 8118776), (16, 5074235), (19, 4273040), (20, 4059388), (31, 2618960), (38, 2136520), (40, 2029694), (62, 1309480), (76, 1068260), (80, 1014847), (95, 854608), (124, 654740), (152, 534130), (155, 523792), (190, 427304), (248, 327370), (304, 267065), (310, 261896), (380, 213652), (496, 163685), (589, 137840), (620, 130948), (760, 106826), (1178, 68920), (1240, 65474), (1520, 53413), (1723, 47120), (2356, 34460), (2480, 32737), (2945, 27568), (3446, 23560), (4712, 17230), (5890, 13784), (6892, 11780), (8615, 9424)]